Unreal Engine Issues
Unreal Engine Issues
Realtime Rendering toggle disabled after using Cloth Painting
UE - Simulation - Visual - Jul 29, 2021After finishing cloth painting, the ability to toggle Realtime Rendering in the viewport is greyed out. Additionally, the Disable Realtime Override button doesn't seem to have any effect. This probl ...
Modifying FinstancedStruct (Blueprint structs) properties inside another FInstancedStruct triggers an ensure and properties do not get saved.
UE - AI - Dec 16, 2024There is a bug with Blueprint structs having FInstancedStruct as a property. If you modify the DefaultValues of any property of an FInstancedStruct inside the blueprint struct asset, an ensure will ...
iPadOS AR App Crashes when ARKit's "Use Scene Depth for Occlusion" is Enabled
UE - Platform - XR - Dec 13, 2024Does not crash in 5.4 on same hardware so looks like a regression. Attached Unreal logs indicate source of critical error: 'FARKitCameraOverlayMobilePS' shader uniform expression set mismatched sh ...
Client Characters that slide past the Server Character while on top of a Movable Actor can become de-synchronized from their Server counterpart
UE - Networking - Sep 9, 2015Client Characters that slide past the Server Character while on top of a Movable Actor can become de-synchronized from their Server counterpart. Does not occur on top of Static Actors. Hard to expl ...
[CrashReport] UE4Editor_Landscape!ULandscapeInfo::RecreateLandscapeInfo() [landscape.cpp:2128]
UE - LD & Modeling - Terrain - Landscape - Sep 28, 2017This is an early trending crash coming out of the 4.17.2 hotfix, with no record of occurring previously. The callstack is very similar to [Link Removed] (fixed in 4.17.2) and may be related. Users ...
Priority order of texture parameters on post process material instances is inverted
UE - Graphics Features - Jan 13, 2025The texture parameters on material instances applied to post process volumes do not respect the priority order of the post process volume, and are in fact inverted relative to the priority of other ...
Some Twinmotion library assets do not render in Path Tracer in files with a large number of assets
TM - Rendering - Apr 17, 2025Reported in SF [Link Removed] In scenes containing large numbers of certain Twinmotion assets, when activating Path Tracer, some of the assets will not render. The assets will render normally in St ...
Adding a scene component to a child blueprint causes log warnings to appear in output log
UE - Gameplay - Blueprint - Sep 1, 2015If a scene component is added to a child blueprint and the parent blueprint is compiled, a log warning will appear that states: "LogBlueprint:Warning: USimpleConstructionScript::FixupRootNodeParen ...
Custom Events set to Replicate do not show the replication information on the node until the Editor is restarted
UE - Gameplay - Blueprint - Mar 3, 2015Custom Events set to Replicate do not show the replication information on the node until the Editor is restarted. For example, after setting a Custom Event to Multicast, the "Replicated From Server ...
Mac Crash when foliage painting in QAGame with TallGrass_01 asset
UE - LD & Modeling - Terrain - Landscape - Aug 3, 2017This crash seems to only be reproducible using the TallGrass_01 asset in QAGame. Having other foliage assets selected sometimes prevents the crash, but usually any combination of assets plus TallGra ...