diff --git a/compose/ui/ui/src/desktopMain/kotlin/androidx/compose/ui/platform/PlatformCompositionLocals.kt b/compose/ui/ui/src/desktopMain/kotlin/androidx/compose/ui/platform/PlatformCompositionLocals.kt
index 03aad1a9eceb0..abf1910017d28 100644
--- a/compose/ui/ui/src/desktopMain/kotlin/androidx/compose/ui/platform/PlatformCompositionLocals.kt
+++ b/compose/ui/ui/src/desktopMain/kotlin/androidx/compose/ui/platform/PlatformCompositionLocals.kt
@@ -24,7 +24,8 @@ internal actual fun ProvidePlatformCompositionLocals(
     content: @Composable () -> Unit
 ) {
     CompositionLocalProvider(
-        LocalLocalization provides defaultPlatformLocalization(),
+        // See https://issuetracker.google.com/issues/330036209 for why `arrayOf` is used.
+        values = arrayOf(LocalLocalization providesDefault defaultPlatformLocalization()),
         content = content
     )
 }
\ No newline at end of file
diff --git a/compose/ui/ui/src/desktopMain/kotlin/androidx/compose/ui/window/Application.desktop.kt b/compose/ui/ui/src/desktopMain/kotlin/androidx/compose/ui/window/Application.desktop.kt
index 042577267a53c..1495c7d2fd122 100644
--- a/compose/ui/ui/src/desktopMain/kotlin/androidx/compose/ui/window/Application.desktop.kt
+++ b/compose/ui/ui/src/desktopMain/kotlin/androidx/compose/ui/window/Application.desktop.kt
@@ -228,7 +228,7 @@ suspend fun awaitApplication(
                                 // This is also provided in `ProvidePlatformCompositionLocals`, but
                                 // for backwards compatibility we need to provide it in the
                                 // application scope too.
-                                LocalLocalization provides defaultPlatformLocalization()
+                                LocalLocalization providesDefault defaultPlatformLocalization()
                             ) {
                                 applicationScope.content()
                             }
diff --git a/compose/ui/ui/src/desktopTest/kotlin/androidx/compose/ui/platform/PlatformLocalizationTest.kt b/compose/ui/ui/src/desktopTest/kotlin/androidx/compose/ui/platform/PlatformLocalizationTest.kt
index 5e3856a644034..39749dd02d881 100644
--- a/compose/ui/ui/src/desktopTest/kotlin/androidx/compose/ui/platform/PlatformLocalizationTest.kt
+++ b/compose/ui/ui/src/desktopTest/kotlin/androidx/compose/ui/platform/PlatformLocalizationTest.kt
@@ -32,8 +32,11 @@ import androidx.compose.ui.test.ComposeUiTest
 import androidx.compose.ui.text.AnnotatedString
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.window.ApplicationScope
+import androidx.compose.ui.window.Popup
+import androidx.compose.ui.window.Window
 import androidx.compose.ui.window.runApplicationTest
 import kotlin.test.Test
+import kotlin.test.assertEquals
 import kotlin.test.assertNotNull
 
 @OptIn(ExperimentalTestApi::class)
@@ -86,10 +89,10 @@ class PlatformLocalizationTest {
         val textManager = object: TextContextMenu.TextManager {
             override val selectedText: AnnotatedString
                 get() = AnnotatedString("")
-            override val cut = { println("Cutting") }
-            override val copy = { println("Copying") }
-            override val paste = { println("Pasting ")}
-            override val selectAll = { println("Selecting all") }
+            override val cut = { }
+            override val copy = { }
+            override val paste = { }
+            override val selectAll = { }
         }
 
         setContent {
@@ -113,4 +116,63 @@ class PlatformLocalizationTest {
         onNodeWithText("Paste").assertDoesNotExist()
         onNodeWithText("Select All").assertDoesNotExist()
     }
+
+    /**
+     * Verify that providing a [PlatformLocalization] in [LocalLocalization] in the application
+     * scope correctly overrides it in the window scope.
+     */
+    @Test
+    fun canOverridePlatformLocalizationFromAppToWindowScope() = runApplicationTest {
+        val customLocalization = object : PlatformLocalization {
+            override val copy: String
+                get() = "My Copy"
+            override val cut: String
+                get() = "My Cut"
+            override val paste: String
+                get() = "My Paste"
+            override val selectAll: String
+                get() = "My Select All"
+        }
+
+        lateinit var actualLocalization: PlatformLocalization
+        launchTestApplication {
+            CompositionLocalProvider(LocalLocalization provides customLocalization) {
+                Window(onCloseRequest = { }) {
+                    actualLocalization = LocalLocalization.current
+                }
+            }
+        }
+        awaitIdle()
+
+        assertEquals(customLocalization, actualLocalization)
+    }
+
+    /**
+     * Verify that providing a [PlatformLocalization] in [LocalLocalization] in the window scope
+     * correctly overrides it in a [Popup].
+     */
+    @Test
+    fun canOverridePlatformLocalizationFromWindowToPopupScope() = runComposeUiTest {
+        val customLocalization = object : PlatformLocalization {
+            override val copy: String
+                get() = "My Copy"
+            override val cut: String
+                get() = "My Cut"
+            override val paste: String
+                get() = "My Paste"
+            override val selectAll: String
+                get() = "My Select All"
+        }
+
+        lateinit var actualLocalization: PlatformLocalization
+        setContent {
+            CompositionLocalProvider(LocalLocalization provides customLocalization) {
+                Popup {
+                    actualLocalization = LocalLocalization.current
+                }
+            }
+        }
+
+        assertEquals(customLocalization, actualLocalization)
+    }
 }
\ No newline at end of file