diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5a4bb1cdfc..6369804db0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 ## [WLED upstream](https://github.com/Aircoookie/WLED/tree/0_14_1) changelog
 
+#### Build 2403290
+-   WLED 0.14.3 release
+-   Fix for transition 0 (#3854, #3832, #3720)
+
 #### Build 2403170
 -   WLED 0.14.2 release
 
diff --git a/platformio.ini b/platformio.ini
index 107ab6fe93..2bddd03723 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -113,7 +113,7 @@ arduino_core_2_7_4 = espressif8266@2.6.2
 arduino_core_3_0_0 = espressif8266@3.0.0
 arduino_core_3_2_0 = espressif8266@3.2.0
 arduino_core_4_1_0 = espressif8266@4.1.0
-arduino_core_3_1_2 = espressif8266@4.2.0
+arduino_core_3_1_2 = espressif8266@4.2.1
 
 # Development platforms
 arduino_core_develop = https://github.com/platformio/platform-espressif8266#develop
@@ -123,8 +123,7 @@ arduino_core_git = https://github.com/platformio/platform-espressif8266#feature/
 platform_wled_default = ${common.arduino_core_3_1_2}
 # We use 2.7.4.7 for all, includes PWM flicker fix and Wstring optimization
 #platform_packages = tasmota/framework-arduinoespressif8266 @ 3.20704.7
-platform_packages = platformio/framework-arduinoespressif8266
-                    platformio/toolchain-xtensa @ ~2.100300.220621 #2.40802.200502
+platform_packages = platformio/toolchain-xtensa @ ~2.100300.220621 #2.40802.200502
                     platformio/tool-esptool #@ ~1.413.0
                     platformio/tool-esptoolpy #@ ~1.30000.0
 
@@ -241,6 +240,7 @@ lib_deps =
     ;;makuna/NeoPixelBus @ 2.7.5 ;; WLEDMM will be added in board specific sections
     ;;https://github.com/Aircoookie/ESPAsyncWebServer.git @ ~2.0.7
     https://github.com/lost-hope/ESPAsyncWebServer.git#master  ;; WLEDMM to display .log and .wled files in /edit
+    ;; https://github.com/Aircoookie/ESPAsyncWebServer.git @ ^2.2.1
   #For use of the TTGO T-Display ESP32 Module with integrated TFT display uncomment the following line
     #TFT_eSPI
   #For compatible OLED display uncomment following
diff --git a/wled00/led.cpp b/wled00/led.cpp
index 0e245c9de0..70863396d8 100644
--- a/wled00/led.cpp
+++ b/wled00/led.cpp
@@ -140,6 +140,8 @@ void stateUpdated(byte callMode) {
     jsonTransitionOnce = false;
     strip.setTransition(transitionDelayTemp);
     if (transitionDelayTemp == 0) {
+      jsonTransitionOnce = false;
+      transitionActive = false;
       applyFinalBri();
       strip.trigger();
       return;