diff --git a/app/code/Magento/Downloadable/Model/SampleRepository.php b/app/code/Magento/Downloadable/Model/SampleRepository.php
index 5b9e8e784b9f3..00f653e87b5ae 100644
--- a/app/code/Magento/Downloadable/Model/SampleRepository.php
+++ b/app/code/Magento/Downloadable/Model/SampleRepository.php
@@ -299,8 +299,11 @@ protected function updateSample(
             $existingSample->setTitle($sample->getTitle());
         }
 
-        if ($sample->getSampleType() === 'file' && $sample->getSampleFileContent() === null) {
-            $sample->setSampleFile($existingSample->getSampleFile());
+        if ($sample->getSampleType() === 'file'
+            && $sample->getSampleFileContent() === null
+            && $sample->getSampleFile() !== null
+        ) {
+            $existingSample->setSampleFile($sample->getSampleFile());
         }
         $this->saveSample($product, $sample, $isGlobalScopeContent);
         return $existingSample->getId();
diff --git a/app/code/Magento/Sales/Model/Order/Creditmemo/Sender/EmailSender.php b/app/code/Magento/Sales/Model/Order/Creditmemo/Sender/EmailSender.php
index ecd5670a319e7..3d2c13cbaaaa9 100644
--- a/app/code/Magento/Sales/Model/Order/Creditmemo/Sender/EmailSender.php
+++ b/app/code/Magento/Sales/Model/Order/Creditmemo/Sender/EmailSender.php
@@ -89,6 +89,7 @@ public function __construct(
      * @param bool $forceSyncMode
      *
      * @return bool
+     * @throws \Exception
      */
     public function send(
         \Magento\Sales\Api\Data\OrderInterface $order,
@@ -96,7 +97,7 @@ public function send(
         \Magento\Sales\Api\Data\CreditmemoCommentCreationInterface $comment = null,
         $forceSyncMode = false
     ) {
-        $creditmemo->setSendEmail(true);
+        $creditmemo->setSendEmail($this->identityContainer->isEnabled());
 
         if (!$this->globalConfig->getValue('sales_email/general/async_sending') || $forceSyncMode) {
             $transport = [
@@ -145,6 +146,7 @@ public function send(
      * @param \Magento\Sales\Api\Data\OrderInterface $order
      *
      * @return string
+     * @throws \Exception
      */
     private function getPaymentHtml(\Magento\Sales\Api\Data\OrderInterface $order)
     {
diff --git a/app/code/Magento/Sales/Model/Order/Email/Sender/CreditmemoSender.php b/app/code/Magento/Sales/Model/Order/Email/Sender/CreditmemoSender.php
index 8004483583114..be7fa8296a264 100644
--- a/app/code/Magento/Sales/Model/Order/Email/Sender/CreditmemoSender.php
+++ b/app/code/Magento/Sales/Model/Order/Email/Sender/CreditmemoSender.php
@@ -96,10 +96,11 @@ public function __construct(
      * @param Creditmemo $creditmemo
      * @param bool $forceSyncMode
      * @return bool
+     * @throws \Exception
      */
     public function send(Creditmemo $creditmemo, $forceSyncMode = false)
     {
-        $creditmemo->setSendEmail(true);
+        $creditmemo->setSendEmail($this->identityContainer->isEnabled());
 
         if (!$this->globalConfig->getValue('sales_email/general/async_sending') || $forceSyncMode) {
             $order = $creditmemo->getOrder();
@@ -146,6 +147,7 @@ public function send(Creditmemo $creditmemo, $forceSyncMode = false)
      *
      * @param Order $order
      * @return string
+     * @throws \Exception
      */
     protected function getPaymentHtml(Order $order)
     {
diff --git a/app/code/Magento/Sales/Model/Order/Email/Sender/InvoiceSender.php b/app/code/Magento/Sales/Model/Order/Email/Sender/InvoiceSender.php
index 994fd79945cfd..bd67de7322a62 100644
--- a/app/code/Magento/Sales/Model/Order/Email/Sender/InvoiceSender.php
+++ b/app/code/Magento/Sales/Model/Order/Email/Sender/InvoiceSender.php
@@ -96,10 +96,11 @@ public function __construct(
      * @param Invoice $invoice
      * @param bool $forceSyncMode
      * @return bool
+     * @throws \Exception
      */
     public function send(Invoice $invoice, $forceSyncMode = false)
     {
-        $invoice->setSendEmail(true);
+        $invoice->setSendEmail($this->identityContainer->isEnabled());
 
         if (!$this->globalConfig->getValue('sales_email/general/async_sending') || $forceSyncMode) {
             $order = $invoice->getOrder();
@@ -146,6 +147,7 @@ public function send(Invoice $invoice, $forceSyncMode = false)
      *
      * @param Order $order
      * @return string
+     * @throws \Exception
      */
     protected function getPaymentHtml(Order $order)
     {
diff --git a/app/code/Magento/Sales/Model/Order/Email/Sender/ShipmentSender.php b/app/code/Magento/Sales/Model/Order/Email/Sender/ShipmentSender.php
index 6729c746f5565..2b10d25b87a04 100644
--- a/app/code/Magento/Sales/Model/Order/Email/Sender/ShipmentSender.php
+++ b/app/code/Magento/Sales/Model/Order/Email/Sender/ShipmentSender.php
@@ -96,10 +96,11 @@ public function __construct(
      * @param Shipment $shipment
      * @param bool $forceSyncMode
      * @return bool
+     * @throws \Exception
      */
     public function send(Shipment $shipment, $forceSyncMode = false)
     {
-        $shipment->setSendEmail(true);
+        $shipment->setSendEmail($this->identityContainer->isEnabled());
 
         if (!$this->globalConfig->getValue('sales_email/general/async_sending') || $forceSyncMode) {
             $order = $shipment->getOrder();
@@ -146,6 +147,7 @@ public function send(Shipment $shipment, $forceSyncMode = false)
      *
      * @param Order $order
      * @return string
+     * @throws \Exception
      */
     protected function getPaymentHtml(Order $order)
     {
diff --git a/app/code/Magento/Sales/Model/Order/Invoice/Sender/EmailSender.php b/app/code/Magento/Sales/Model/Order/Invoice/Sender/EmailSender.php
index aa0687bee504f..5ae3306ddf75b 100644
--- a/app/code/Magento/Sales/Model/Order/Invoice/Sender/EmailSender.php
+++ b/app/code/Magento/Sales/Model/Order/Invoice/Sender/EmailSender.php
@@ -89,6 +89,7 @@ public function __construct(
      * @param bool $forceSyncMode
      *
      * @return bool
+     * @throws \Exception
      */
     public function send(
         \Magento\Sales\Api\Data\OrderInterface $order,
@@ -96,7 +97,7 @@ public function send(
         \Magento\Sales\Api\Data\InvoiceCommentCreationInterface $comment = null,
         $forceSyncMode = false
     ) {
-        $invoice->setSendEmail(true);
+        $invoice->setSendEmail($this->identityContainer->isEnabled());
 
         if (!$this->globalConfig->getValue('sales_email/general/async_sending') || $forceSyncMode) {
             $transport = [
@@ -145,6 +146,7 @@ public function send(
      * @param \Magento\Sales\Api\Data\OrderInterface $order
      *
      * @return string
+     * @throws \Exception
      */
     private function getPaymentHtml(\Magento\Sales\Api\Data\OrderInterface $order)
     {
diff --git a/app/code/Magento/Sales/Model/Order/Shipment/Sender/EmailSender.php b/app/code/Magento/Sales/Model/Order/Shipment/Sender/EmailSender.php
index 0a393548069f5..3657f84d4445d 100644
--- a/app/code/Magento/Sales/Model/Order/Shipment/Sender/EmailSender.php
+++ b/app/code/Magento/Sales/Model/Order/Shipment/Sender/EmailSender.php
@@ -89,6 +89,7 @@ public function __construct(
      * @param bool $forceSyncMode
      *
      * @return bool
+     * @throws \Exception
      */
     public function send(
         \Magento\Sales\Api\Data\OrderInterface $order,
@@ -96,7 +97,7 @@ public function send(
         \Magento\Sales\Api\Data\ShipmentCommentCreationInterface $comment = null,
         $forceSyncMode = false
     ) {
-        $shipment->setSendEmail(true);
+        $shipment->setSendEmail($this->identityContainer->isEnabled());
 
         if (!$this->globalConfig->getValue('sales_email/general/async_sending') || $forceSyncMode) {
             $transport = [
@@ -145,6 +146,7 @@ public function send(
      * @param \Magento\Sales\Api\Data\OrderInterface $order
      *
      * @return string
+     * @throws \Exception
      */
     private function getPaymentHtml(\Magento\Sales\Api\Data\OrderInterface $order)
     {
diff --git a/app/code/Magento/Sales/Test/Unit/Model/Order/Creditmemo/Sender/EmailSenderTest.php b/app/code/Magento/Sales/Test/Unit/Model/Order/Creditmemo/Sender/EmailSenderTest.php
index 9fd2a8b0d929f..859fbde31f5d8 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/Order/Creditmemo/Sender/EmailSenderTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/Order/Creditmemo/Sender/EmailSenderTest.php
@@ -249,7 +249,7 @@ public function testSend($configValue, $forceSyncMode, $isComment, $emailSending
 
         $this->creditmemoMock->expects($this->once())
             ->method('setSendEmail')
-            ->with(true);
+            ->with($emailSendingResult);
 
         if (!$configValue || $forceSyncMode) {
             $transport = [
@@ -279,7 +279,7 @@ public function testSend($configValue, $forceSyncMode, $isComment, $emailSending
                 ->method('setTemplateVars')
                 ->with($transport->getData());
 
-            $this->identityContainerMock->expects($this->once())
+            $this->identityContainerMock->expects($this->exactly(2))
                 ->method('isEnabled')
                 ->willReturn($emailSendingResult);
 
diff --git a/app/code/Magento/Sales/Test/Unit/Model/Order/Email/Sender/CreditmemoSenderTest.php b/app/code/Magento/Sales/Test/Unit/Model/Order/Email/Sender/CreditmemoSenderTest.php
index 31bf846689230..02a2bbec72389 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/Order/Email/Sender/CreditmemoSenderTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/Order/Email/Sender/CreditmemoSenderTest.php
@@ -90,7 +90,7 @@ public function testSend($configValue, $forceSyncMode, $customerNoteNotify, $ema
 
         $this->creditmemoMock->expects($this->once())
             ->method('setSendEmail')
-            ->with(true);
+            ->with($emailSendingResult);
 
         $this->globalConfig->expects($this->once())
             ->method('getValue')
@@ -130,7 +130,7 @@ public function testSend($configValue, $forceSyncMode, $customerNoteNotify, $ema
                     ]
                 );
 
-            $this->identityContainerMock->expects($this->once())
+            $this->identityContainerMock->expects($this->exactly(2))
                 ->method('isEnabled')
                 ->willReturn($emailSendingResult);
 
@@ -197,6 +197,8 @@ public function sendDataProvider()
      * @param bool $isVirtualOrder
      * @param int $formatCallCount
      * @param string|null $expectedShippingAddress
+     *
+     * @return void
      * @dataProvider sendVirtualOrderDataProvider
      */
     public function testSendVirtualOrder($isVirtualOrder, $formatCallCount, $expectedShippingAddress)
@@ -207,7 +209,7 @@ public function testSendVirtualOrder($isVirtualOrder, $formatCallCount, $expecte
 
         $this->creditmemoMock->expects($this->once())
             ->method('setSendEmail')
-            ->with(true);
+            ->with(false);
 
         $this->globalConfig->expects($this->once())
             ->method('getValue')
@@ -242,7 +244,7 @@ public function testSendVirtualOrder($isVirtualOrder, $formatCallCount, $expecte
                 ]
             );
 
-        $this->identityContainerMock->expects($this->once())
+        $this->identityContainerMock->expects($this->exactly(2))
             ->method('isEnabled')
             ->willReturn(false);
 
diff --git a/app/code/Magento/Sales/Test/Unit/Model/Order/Email/Sender/InvoiceSenderTest.php b/app/code/Magento/Sales/Test/Unit/Model/Order/Email/Sender/InvoiceSenderTest.php
index 9c54c716e4207..ba2f1166baf3c 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/Order/Email/Sender/InvoiceSenderTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/Order/Email/Sender/InvoiceSenderTest.php
@@ -90,7 +90,7 @@ public function testSend($configValue, $forceSyncMode, $customerNoteNotify, $ema
 
         $this->invoiceMock->expects($this->once())
             ->method('setSendEmail')
-            ->with(true);
+            ->with($emailSendingResult);
 
         $this->globalConfig->expects($this->once())
             ->method('getValue')
@@ -136,7 +136,7 @@ public function testSend($configValue, $forceSyncMode, $customerNoteNotify, $ema
                     ]
                 );
 
-            $this->identityContainerMock->expects($this->once())
+            $this->identityContainerMock->expects($this->exactly(2))
                 ->method('isEnabled')
                 ->willReturn($emailSendingResult);
 
@@ -212,7 +212,7 @@ public function testSendVirtualOrder($isVirtualOrder, $formatCallCount, $expecte
 
         $this->invoiceMock->expects($this->once())
             ->method('setSendEmail')
-            ->with(true);
+            ->with(false);
 
         $this->globalConfig->expects($this->once())
             ->method('getValue')
@@ -247,7 +247,7 @@ public function testSendVirtualOrder($isVirtualOrder, $formatCallCount, $expecte
                 ]
             );
 
-        $this->identityContainerMock->expects($this->once())
+        $this->identityContainerMock->expects($this->exactly(2))
             ->method('isEnabled')
             ->willReturn(false);
 
diff --git a/app/code/Magento/Sales/Test/Unit/Model/Order/Email/Sender/ShipmentSenderTest.php b/app/code/Magento/Sales/Test/Unit/Model/Order/Email/Sender/ShipmentSenderTest.php
index b1b18af63b590..8a71c738e9fbe 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/Order/Email/Sender/ShipmentSenderTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/Order/Email/Sender/ShipmentSenderTest.php
@@ -90,7 +90,7 @@ public function testSend($configValue, $forceSyncMode, $customerNoteNotify, $ema
 
         $this->shipmentMock->expects($this->once())
             ->method('setSendEmail')
-            ->with(true);
+            ->with($emailSendingResult);
 
         $this->globalConfig->expects($this->once())
             ->method('getValue')
@@ -136,7 +136,7 @@ public function testSend($configValue, $forceSyncMode, $customerNoteNotify, $ema
                     ]
                 );
 
-            $this->identityContainerMock->expects($this->once())
+            $this->identityContainerMock->expects($this->exactly(2))
                 ->method('isEnabled')
                 ->willReturn($emailSendingResult);
 
@@ -212,7 +212,7 @@ public function testSendVirtualOrder($isVirtualOrder, $formatCallCount, $expecte
 
         $this->shipmentMock->expects($this->once())
             ->method('setSendEmail')
-            ->with(true);
+            ->with(false);
 
         $this->globalConfig->expects($this->once())
             ->method('getValue')
@@ -247,7 +247,7 @@ public function testSendVirtualOrder($isVirtualOrder, $formatCallCount, $expecte
                 ]
             );
 
-        $this->identityContainerMock->expects($this->once())
+        $this->identityContainerMock->expects($this->exactly(2))
             ->method('isEnabled')
             ->willReturn(false);
         $this->shipmentResourceMock->expects($this->once())
diff --git a/app/code/Magento/Sales/Test/Unit/Model/Order/Invoice/Sender/EmailSenderTest.php b/app/code/Magento/Sales/Test/Unit/Model/Order/Invoice/Sender/EmailSenderTest.php
index 8a4e2920ba207..dcf689cf7d53b 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/Order/Invoice/Sender/EmailSenderTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/Order/Invoice/Sender/EmailSenderTest.php
@@ -247,7 +247,7 @@ public function testSend($configValue, $forceSyncMode, $isComment, $emailSending
 
         $this->invoiceMock->expects($this->once())
             ->method('setSendEmail')
-            ->with(true);
+            ->with($emailSendingResult);
 
         if (!$configValue || $forceSyncMode) {
             $transport = [
@@ -277,7 +277,7 @@ public function testSend($configValue, $forceSyncMode, $isComment, $emailSending
                 ->method('setTemplateVars')
                 ->with($transport->getData());
 
-            $this->identityContainerMock->expects($this->once())
+            $this->identityContainerMock->expects($this->exactly(2))
                 ->method('isEnabled')
                 ->willReturn($emailSendingResult);
 
diff --git a/app/code/Magento/Sales/Test/Unit/Model/Order/Shipment/Sender/EmailSenderTest.php b/app/code/Magento/Sales/Test/Unit/Model/Order/Shipment/Sender/EmailSenderTest.php
index 94347e8b32d54..391e99ba6f835 100644
--- a/app/code/Magento/Sales/Test/Unit/Model/Order/Shipment/Sender/EmailSenderTest.php
+++ b/app/code/Magento/Sales/Test/Unit/Model/Order/Shipment/Sender/EmailSenderTest.php
@@ -249,7 +249,7 @@ public function testSend($configValue, $forceSyncMode, $isComment, $emailSending
 
         $this->shipmentMock->expects($this->once())
             ->method('setSendEmail')
-            ->with(true);
+            ->with($emailSendingResult);
 
         if (!$configValue || $forceSyncMode) {
             $transport = [
@@ -279,7 +279,7 @@ public function testSend($configValue, $forceSyncMode, $isComment, $emailSending
                 ->method('setTemplateVars')
                 ->with($transport->getData());
 
-            $this->identityContainerMock->expects($this->once())
+            $this->identityContainerMock->expects($this->exactly(2))
                 ->method('isEnabled')
                 ->willReturn($emailSendingResult);
 
diff --git a/app/code/Magento/Sales/view/adminhtml/templates/order/create/totals/tax.phtml b/app/code/Magento/Sales/view/adminhtml/templates/order/create/totals/tax.phtml
index 92139896273da..643146f7bb5cb 100755
--- a/app/code/Magento/Sales/view/adminhtml/templates/order/create/totals/tax.phtml
+++ b/app/code/Magento/Sales/view/adminhtml/templates/order/create/totals/tax.phtml
@@ -33,7 +33,6 @@ $taxAmount = $block->getTotal()->getValue();
                 <?php $percent = $info['percent']; ?>
                 <?php $amount = $info['amount']; ?>
                 <?php $rates = $info['rates']; ?>
-                <?php $isFirst = 1; ?>
 
                 <?php foreach ($rates as $rate): ?>
                 <tr class="summary-details-<?= /* @escapeNotVerified */ $taxIter ?> summary-details<?php if ($isTop): echo ' summary-details-first'; endif; ?>" style="display:none;">
@@ -44,13 +43,10 @@ $taxAmount = $block->getTotal()->getValue();
                         <?php endif; ?>
                         <br />
                     </td>
-                    <?php if ($isFirst): ?>
-                        <td style="<?= /* @escapeNotVerified */ $block->getTotal()->getStyle() ?>" class="admin__total-amount" rowspan="<?= count($rates) ?>">
-                            <?= /* @escapeNotVerified */ $block->formatPrice($amount) ?>
-                        </td>
-                    <?php endif; ?>
+                    <td style="<?= /* @escapeNotVerified */ $block->getTotal()->getStyle() ?>" class="admin__total-amount">
+                        <?= /* @escapeNotVerified */ $block->formatPrice(($amount*(float)$rate['percent'])/$percent) ?>
+                    </td>
                 </tr>
-                <?php $isFirst = 0; ?>
                 <?php $isTop = 0; ?>
                 <?php endforeach; ?>
         <?php endforeach; ?>
diff --git a/app/code/Magento/Wishlist/view/frontend/templates/item/column/cart.phtml b/app/code/Magento/Wishlist/view/frontend/templates/item/column/cart.phtml
index 4787ee04860e3..434bd57a2087f 100644
--- a/app/code/Magento/Wishlist/view/frontend/templates/item/column/cart.phtml
+++ b/app/code/Magento/Wishlist/view/frontend/templates/item/column/cart.phtml
@@ -25,7 +25,7 @@ $allowedQty = $viewModel->setItem($item)->getMinMaxQty();
             <label class="label" for="qty[<?= $block->escapeHtmlAttr($item->getId()) ?>]"><span><?= $block->escapeHtml(__('Qty')) ?></span></label>
             <div class="control">
                 <input type="number" data-role="qty" id="qty[<?= $block->escapeHtmlAttr($item->getId()) ?>]" class="input-text qty" data-validate="{'required-number':true,'validate-greater-than-zero':true,'validate-item-quantity':{'minAllowed':<?= /* @noEscape */ $allowedQty['minAllowed'] ?>,'maxAllowed':<?= /* @noEscape */ $allowedQty['maxAllowed'] ?>}}"
-               name="qty[<?= $block->escapeHtmlAttr($item->getId()) ?>]" value="<?= /* @noEscape */ (int)($block->getAddToCartQty($item) * 1) ?>">
+               name="qty[<?= $block->escapeHtmlAttr($item->getId()) ?>]" value="<?= /* @noEscape */ (int)($block->getAddToCartQty($item) * 1) ?>" <?= $product->isSaleable() ? '' : 'disabled="disabled"' ?>>
             </div>
         </div>
     <?php endif; ?>
diff --git a/app/code/Magento/Wishlist/view/frontend/templates/item/column/comment.phtml b/app/code/Magento/Wishlist/view/frontend/templates/item/column/comment.phtml
index 17e2404ee23cf..5ab5bc5422e7e 100644
--- a/app/code/Magento/Wishlist/view/frontend/templates/item/column/comment.phtml
+++ b/app/code/Magento/Wishlist/view/frontend/templates/item/column/comment.phtml
@@ -17,6 +17,6 @@ $item = $block->getItem();
         <span><?= $block->escapeHtml(__('Comment')) ?></span>
     </label>
     <div class="control">
-        <textarea id="product-item-comment-<?= $block->escapeHtmlAttr($item->getWishlistItemId()) ?>" placeholder="<?= /* @noEscape */ $this->helper('Magento\Wishlist\Helper\Data')->defaultCommentString() ?>" name="description[<?= $block->escapeHtmlAttr($item->getWishlistItemId()) ?>]" title="<?= $block->escapeHtmlAttr(__('Comment')) ?>" class="product-item-comment"><?= ($block->escapeHtml($item->getDescription())) ?></textarea>
+        <textarea id="product-item-comment-<?= $block->escapeHtmlAttr($item->getWishlistItemId()) ?>" placeholder="<?= /* @noEscape */ $this->helper('Magento\Wishlist\Helper\Data')->defaultCommentString() ?>" name="description[<?= $block->escapeHtmlAttr($item->getWishlistItemId()) ?>]" title="<?= $block->escapeHtmlAttr(__('Comment')) ?>" class="product-item-comment" <?= $item->getProduct()->isSaleable() ? '' : 'disabled="disabled"' ?>><?= ($block->escapeHtml($item->getDescription())) ?></textarea>
     </div>
 </div>
diff --git a/dev/tests/api-functional/testsuite/Magento/Downloadable/Api/ProductRepositoryTest.php b/dev/tests/api-functional/testsuite/Magento/Downloadable/Api/ProductRepositoryTest.php
index 9682c4b2ee603..39a64c94067aa 100644
--- a/dev/tests/api-functional/testsuite/Magento/Downloadable/Api/ProductRepositoryTest.php
+++ b/dev/tests/api-functional/testsuite/Magento/Downloadable/Api/ProductRepositoryTest.php
@@ -472,6 +472,10 @@ public function testUpdateDownloadableProductSamplesWithNewFile()
             'title' => 'sample2_updated',
             'sort_order' => 2,
             'sample_type' => 'file',
+            'sample_file_content' => [
+                'name' => 'sample2.jpg',
+                'file_data' => base64_encode(file_get_contents($this->testImagePath)),
+            ],
         ];
 
         $response[ExtensibleDataInterface::EXTENSION_ATTRIBUTES_KEY]["downloadable_product_samples"] =