Unreal Engine Issues
Unreal Engine Issues
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 ...
Deferring Blueprint CDO construction at load time is leading to some data loss.
UE - Framework - Blueprint - Jan 27, 2023Various licensees are reporting data loss on load due to the change that was made for [Link Removed] Closed in which we now ...
Subsurface Scattering Checkerboard with SceneColourFormat 3 (High Scalability) leads to a visual artefact when temporal upscaling is in use
UE - Rendering - 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 ...
GAS: Double attributes not shown GameplayDebugger
UE - Gameplay - Gameplay Ability System - Aug 27, 2025Context The Gameplay Ability System lets devs specify numerical attribute properties in UAttributeSet subclasses. Although the preferred attribute property type is FGameplayAttributeData, GAS has l ...
BP - Exclusive nativization will fail at cook time if an Actor BP class enabled for nativization includes a Component BP that's not enabled for nativization in its component list.
UE - Gameplay - Blueprint - Apr 26, 2017This happens because the Blueprinted component is not also enabled for nativization, but the nativized Actor BP tries to use it as a native class type. Current workaround: Ensure that the Blueprint ...
[CrashReport] UE4Editor_Landscape!ULandscapeInfo::UpdateLayerInfoMap() [landscape.cpp:1459]
UE - LD & Modeling - Terrain - Landscape - Aug 22, 2017This is an intermittent crash occurring in the 4.17 release. Users have not provided any descriptions of their actions when the crashes occur. Source Context 1444 LayerSettings.bVa ...
Report of branching point notifies failing to trigger
UE - Runtime - Animation - 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 ...
Editor Crashes After Building Lighting with Blueprint Set to Native Parent Class: Light
UE - Graphics Features - Oct 26, 2017Whenever a Blueprint set to Native Parent Class: Light is placed into a level, Editor crashes after building lighting. The Blueprint does not need to contain an actual light component to crash the e ...
Japanese language input keys/Menu key zoom out graph view
UE - Editor - UI Systems - Localization - Oct 31, 2017When using a Japanese keyboard, using Japanese language input special key(halfwidth/fullwidth/kanji key) zooms out graph view in BP editor and Material editor. It seems the menu key makes the editor ...