Unreal Engine Issues
Unreal Engine Issues
Crash when Undo after deleting a Material Layer of a Material Instance.
UE - Rendering - Architecture - Materials - Apr 2, 2025In Unreal Engine version 5.5.4, the Editor crashes when performing Undo after deleting a Material Layer of a Material Instance ...
Mesh painting on staticmesh doesn't always apply Colors to All LODs
UE - Editor - Content Pipeline - Asset Build - Apr 18, 2022See the video [Link Removed] ...
Exporting a spawnable through Python doesn't work
UE - Anim - Sequencer - Jan 29, 2020Possible bug with GAOGlobalDistanceFieldCacheMostlyStaticSeparately
UE - Rendering - Graphics Features - Jun 2, 2025The Global Distance Field can constantly update, even when the camera is stationary, in large World Partition maps. This bug requires a large amount of the World Partition map to be loaded to reprod ...
CppCompileWarningSettings.NonInlinedGenCppWarningLevel messages should contain Warning\Error
UE - Core - Cpp Tools - UnrealBuildTool - Oct 8, 2025The messages emitted when CppCompileWarningSettings.NonInlinedGenCppWarningLevel is set to Warning\Error should contain the literal so the tools pick them up and react accordingly. From the EPS c ...
Crash triggering SetScalarParameterValueOnMaterial node
UE - Gameplay - Nov 30, 2015Crash occurs when the user triggers the SetScalarParameterValueOnMaterial function node. ...
AutoLOD changes the static meshes LOD at different distances in VR Packages and Previews than in Editor
UE - Platform - XR - Jul 30, 2020Packaged VR Projects and VR Previews change the LOD at a closer distance than in editor. ...
Toggling SetSimulatePhysics state on a Primitive component with a child PrimitiveComponent leaks PxShapes
UE - Simulation - Physics - May 23, 2016FBodyInstance::Weld did not check to see whether or not child components were already welded to a parent. This meant that whenever Weld was called, ShapeToBodiesMap would continue to grow in size, e ...
Editor Crashes When Duplicating Actor that Contains Additional Components
UE - Gameplay - Dec 11, 2015Attempting to spawn a copy of an actor that has components that were added to an instance of that actor in the level causes a crash. Spawning the actor without adding additional components to the in ...
Need addElement and addElements to allow single insertion instead of to all elements with matching tag
UE - Platform - Mobile - Aug 1, 2017Since multiple dict tags can be in a plist, not just the top level, need to be able to specify to only insert once. Adding an optional once="true" attribute to these commands in UPL will allow this ...