Unreal Engine Issues

ParticlePosition doesn't use Previous values

FHLSLMaterialTranslator::ParticlePosition does not return Previous information when request which can result in bad motion vector calculation. ...

WP HLOD Crash on Small Cell Sizes

Export Asset Task with Directory as Filename causes Editor Crash

Cannot copy from the message log when building with Clang

This was disabled for clang a long time ago in CL 3019423 due to a codegen crash but seems like the bug is fixed now ...

Setting GDelayTrimMemoryDuringMapLoadMode = 2 causes crash on same map reload

GDelayTrimMemoryDuringMapLoadMode is a CVar that controls whether a garbage collection should take place during map change after unloading the previous map and before loading the new one. By default ...

Shadow map z-fighting when using Overlay material

UInstancedStaticMeshComponentRemoveInstances crashes if called with an empty array

This looks like it can be fixed with an early-out when the passed array of indices is empty. Log:[2024.01.03-16.38.36:091][291]LogOutputDevice: Warning: Script Stack (1 frames) : /Game/BP_Crashy.B ...

Groom shadows stay visible when component is hidden

This appears to happen with both Virtual Shadow Maps and Cascaded Shadow Maps. ...

Merge Actor - Textures created with the "Merge" option are not visible in the Content Browser

A recent modification to the CB behavior made it so that only the main asset of a package is visible in the CB. It was unknown, but the merge actor tool "Merge" option has been creating a single pa ...

Blueprint Typing Potentially Incorrect when using Chooser Plugin

This appears to be some form of type confusion. In editor, the type of the result pin is a Packed Level Actor Class Reference, but at runtime, the returned value is a BlueprintGeneratedClass. ...