Unreal Engine Issues
Unreal Engine Issues
UKismetArrayLibrary::GenericArray_Shuffle is weighted to return some results more than others
UE - Gameplay - Aug 15, 2017The implementation of UKismetArrayLibrary::GenericArray_Shuffle() will generate certain array shuffle results more often (up to three times as much) than others, rather than having a roughly equal c ...
[CrashReport] ULevel::GetWorldSettings() - UMaterialInstanceThumbnailRenderer::Draw
Tools - Aug 29, 2017This is a common assertion that has occurred since at least 4.14 and affected nearly 100 users. The callstack is similar to [Link Removed], which was marked fixed for 4.14. User DescriptionsUndoi ...
Skeletal Meshes have physics collisions lag
UE - Simulation - Physics - Oct 2, 2019Skeletal mesh's physics collision lag behind the actual mesh. It didn't matter if there was just a root bone or multiple bones/constraints. This doesn't happen when using static meshes. The effect ...
Changing the name of a native component results in a blank details panel
UE - Gameplay - Components - May 7, 2021Much like [Link Removed] (which I'm backing down on my by design claim), there is an issue where if you previously referenced a component that no longer exists, the correct instanced subobject is lo ...
Subsurface Scattering Checkerboard with SceneColourFormat 3 (High Scalability) leads to a visual artefact when temporal upscaling is in use
UE - Graphics Features - Sep 30, 2024Primarily visible at very low internal resolutions (25-33%), the SSS checkerboard with an RGB scene colour format (r.SceneColorFormat 3) causes a double-image artefact both internally and on the sil ...
Descriptions for vis log shapes in the Rewind Debugger are misaligned
UE - AI - Debugging - Mar 25, 2025When recording shape information, descriptions are offset from the shape. Licensee Message - I noticed that the capsule vis log description labels were not lining up after replaying the recording ...
Can't Package game with FJsonObjectConverter
It is not possible to package a game when using the FJsonObjectConverter. This Converter is part of "JsonUtilities", and whenever I'm including this to my Build.cs as follows, the packaging fails: ...
[CrashReport] UE4Editor_Core!rml::internal::ExtMemoryPool::initTLS()
UE - Gameplay - Blueprint - Aug 15, 2017This is a trending crash coming out of the 4.17.0 release. Users have not provided any descriptions of their actions when the crash occurred. The callstack shares some similarities to an older 4.14 ...
Report of branching point notifies failing to trigger
UE - Anim - Runtime - Nov 15, 2021The problem seems to come from a notify having its LinkedMontage set to null when RefreshBranchingPointMarkers() is called. IsBranchingPoint() fails in this case, so it's never registered as a branc ...
Datasmith & mikktspace tangent cause entities to glow with lightmaps
UE - Editor - Content Pipeline - Datasmith - Exporters - Feb 22, 2019The steps above are reduced to their simplest expression. I appears that several customers complained about lightmap baking resulting in glowing objects. This typically happens on interior door fr ...