Unreal Engine Issues
Unreal Engine Issues
PythonScriptPlugin: UE_LOG Format Changed to Unicode after Redirection
UE - Editor - Workflow Systems - Feb 15, 2023PythonScriptPlugin sets std output mode to _O_BINARY but fails to restore it to the previous state afterwards because cached StdOutMode is already _0_TEXT, hence _setmode returns -1. See PythonScri ...
ULevelEditorDragDropHandler::PreviewDropObjectsAtCoordinates : Should set proper referencer domain when ContentBundle is active
UE - World Creation - Worldbuilding Tools - World Partition - Aug 21, 2023ULevelEditorDragDropHandler::PreviewDropObjectsAtCoordinates sets the World as the ReferencingAsset when we should probably set the GameDataAsset for the current active ContentBundle if there is any ...
Hardware Accelerated Video Decoding with DirectX 11 causes videos to render black when loaded in a Media Player
UE - Media Framework - Sep 7, 2023This is not a regression. Tested in //UE5/Release-5.2 CL26001984. Hardware Accelerated Video Decoding requires DirectX 11, but it appears the combination causes media players to only render a black ...
Niagara Position Mode Unset results in World Space rather than Local Space
UE - Niagara - Scripting - Apr 16, 2025When an emitter's Position Mode is Unset, the particles spawn in World Space 0,0,0. This is unexpected. If the Position Mode is Unset in 5.4, the particles remain in Local Space, which is the inten ...
Nanite mesh not culled when owner is editor only actor in gameview
UE - Graphics Features - Nanite - Mar 29, 2024Nanite mesh is not culled because "DrawInGame" value in the primitive uniform buffer is always 1. Can be fixed with below modification:// in FPrimitiveSceneProxy::FPrimitiveSceneProxy DrawInGa ...
Missing materials on the rear lights and windows of library vehicles
TM - Content - Oct 24, 2025Reported in SF [Link Removed] The rear light material and window materials on Twinmotion library vehicles are not present on many vehicles in TM 2025.2. Confirmed affected vehicles are in the foll ...
Comment boxes no longer allow pinning/unpinning of comment bubbles
UE - Gameplay - Blueprint - Jun 24, 2015Comment bubbles above comment boxes no longer have an option to pin/unpin comment bubbles. This functionality allowed users to choose whether or not to show the comment bubble, which was useful for ...
Cannot key font material for UMG Widget animations
UE - Anim - Sequencer - Sep 14, 2023[CrashReport] UE4Editor-Core!static void PureCallHandler() [WindowsPlatformMisc.cpp:477]
UE - Foundation - Core - May 8, 2020Generated from CrashReporter Error Message: Fatal error: [File:D:/Build/++UE4+Licensee/Sync/Engine/Source/Runtime/Core/Private/Windows/WindowsPlatformMisc.cpp] [Line: 475] Pure virtual function bei ...