Unreal Engine Issues
Unreal Engine Issues
Light as If Static setting does not Persist when Re-opening Project
Tools - Apr 28, 2016This bug was originally entered back in 4.8 as [Link Removed], but was closed as by design. The reason was, the mesh did not have Lightmap UVs, so using the 'Light as If Static' option would not wor ...
[CrashReport] UE4Editor_SequenceRecorder!FAnimationRecorder::UpdateRecord() [animationrecorder.cpp:464]
UE - Anim - Sequencer - Sep 14, 2017This is a common and longstanding crash that has affected more than 300 users since 4.12. The callstack is closely similar to [Link Removed], although with different error messages. User Descripti ...
[CrashReport] UE4Editor_UnrealEd!TArray<TSharedRef<FAssetThumbnailPool::FThumbnailInfo,0>,FDefaultAllocator>::AddUniqueImpl<TSharedRef<FAssetThumbnailPool::FThumbnailInfo,0> const & __ptr64>() [array.h:1805]
Tools - Sep 20, 2017This is a longstanding crash that occurs with low frequency per release, but has affected 400 users since the 4.11 release. Unfortunately among all of them, only one has provided any description. ...
[CrashReport] GPUCrash - exiting due to D3D device being lost - D3D Hung - Nvidia
UE - Graphics Features - May 14, 2019Separating [Link Removed] into Nvidia and AMD tickets.This ticket will house Nvidia information Exported data on 5/14/2019 with following Query:1 Month Time FrameMajorVersion is 4.22.1Callstack Con ...
Multiple setter functions in UMaterialEditingLibrary always return false even when the parameter is correctly set on the MaterialInstance.
UE - Rendering Architecture - Materials - May 30, 2025In Unreal Engine, materials can expose parameters that can then be modified via instances (MaterialInstanceConstant). The UMaterialEditingLibrary provides several functions to modify these parameter ...
[CrashReport] UEdGraphPin::Modify - UEdGraphSchema_K2::RecombinePin
UE - Gameplay - Blueprint - Sep 7, 2017This is a somewhat common crash affecting users in 4.17. Users have not provided any descriptions of their actions when the crash occurred. Source Context 606 void UEdGraphPin::AddStructRe ...
GameplayTagQuery in editor can fail to update to new values or reset after being cancelled
UE - Gameplay - Apr 25, 2024When editing a GameplayTagQuery inside of the editor, there are times when the query editor will not update the query when selecting Ok or fail to return the query to its original state before editi ...
[CrashReport] Integer divide-by-zero | RHIGetRenderQueryResult() [d3d11query.cpp:59]
UE - Graphics Features - Aug 29, 2017This is a common and longstanding crash that has occurred since at least the 4.15 release and has affected more than 200 users. User Descriptionsafter opening a projectwas just trying to start a pr ...
Get unexpected surface normals result while using TextureBasedMorph
UE - Graphics Features - Jan 11, 2018Meshes that animate via vertex deformations using worldposition offset display incorrect surface normals while animating. The reflections of the environment smear as the mesh moves making it look tr ...
Inconsistent texture loading issue within material editor
UE - Rendering Architecture - Materials - Jul 16, 2025A licensee has reached out via EPS about a texture loading issue they are having in-editor. I summarized the most important points below:The issue relates to texture load failure associated with mat ...