Unreal Engine Issues
Unreal Engine Issues
Animation timeline shows black when only animating the opacity of a widget (regardless of the the color setting in that widget)
UE - Anim - Sequencer - Jul 13, 2015This is something that needs to be solved at the color track level in sequencer, we need to be showing current values in place of 0,0,0 for the things that are not animated. When animating just the ...
GPU time is not tracked in StatFPSChart on Android
UE - Platform - Mobile - Jul 20, 2018This issue doesn't occur on iOS using the same project. This occurred on all the devices tested, which were: Galaxy S6 (SM-G920F), v6.0, Mali T760MP8 Galaxy S7 (SM-G930V), v7.0, Adreno 530 Galaxy S ...
When moving actors to the current level, their label is reset and displayed incorrectly on the Scene Outliner until the next time it is refreshed
UE - Editor - Workflow Systems - Jul 14, 2025This is a regression, it worked correctly up to UE 5.4, but repros on UE 5.5 and 5.6. Also, this seems related to [Link Removed] ...
Velocity Scene Texture Data Integrity Issues
UE - Graphics Features - Jan 8, 2026When a Post-Process Material uses the Scene Texture Material Expression, the following code is generated: ``` MaterialFloat2 Local0 = Parameters.TexCoords[0].xy; MaterialFloat2 Local1 = ClampSceneT ...
[CrashReport] UE4Editor_CoreUObject!UObjectBase::IsValidLowLevelFast() [uobjectbase.cpp:294]
UE - Foundation - Core - Aug 22, 2017This is a common crash in the 4.16 and 4.17 releases. User DescriptionsWriting a custom component in C++. Hotcompiled it through VS2017. Had the BP editor open with a class derived from that compo ...
StopMontage with different BlendOutTime not taken into account after first StopMontage
UE - Anim - Gameplay - Nov 19, 2024When an animation is currently blending out due to automatic blend out or GameplayLogic, further StopMontage with specific BlendOut will not update the time to blend out of the current blending out ...
[CrashReport] UE4Editor_Engine!FTextureCacheDerivedDataWorker::BuildTexture() [texturederiveddata.cpp:772]
UE - Graphics Features - Feb 20, 2017Error message: Access violation - code c0000005 (first/second chance not available) Source Context:757 if (SourceMips.Num()) 758 { 759 FFormatNamedArguments Args; ...
GAS PlayMontageAndWait: Server applies root motion with wrong scale at last montage tick
UE - Gameplay - Gameplay Ability System - Apr 3, 2024User reported: when playing an AnimMontage via GameplayAbility with the PlayMontageAndWait ability task that has a custom value for AnimRootMotionTranslationScale, (dedicated) servers can apply an i ...
Crash from generated Merged Actor with no created lightmap UV
UE - Gameplay - Nov 11, 2016If you import a static mesh with no setup lightmap and uncheck the option for Generate lightmap UV so that only the UV Channel 0 is present. When you use the Merge Actor tool with a single one of th ...
[Feature Request] Cook in the Editor should only save Asset Registry for the cook target platform
UE - Foundation - Core - Cooker - Jan 18, 2018Request from Licensee: When launch Launching in the editor, it seems that asset registries of platforms other than those specified in Launch are also generated. LogAssetRegistryGenerator: Startin ...