Unreal Engine Issues
Unreal Engine Issues
FAsyncIOSystemBase::QueueDestroyHandleRequest fatal error crash on launch or package
UE - Foundation - Core - Jun 23, 2015Fatal error due to FAsyncIOSystemBase::QueueDestroyHandleRequest during launching and packaging projects. May be linked to: [Link Removed] ...
Timing appears to be different for the first call of tick
UE - Gameplay - Nov 30, 2016Timing appears to be different for the first call of tick causing the camera to appear in a different area than what it was in 4.13 This issue appears to be a regression ...
SetActorLocation does not affect WheeledVehicles
UE - Simulation - Physics - Sep 21, 2015When using SetActorPosition() on a WheeledVehicle, it does not affect it in any way. This worked previously in 4.8. This has also been tested in main CL# 2698791 This may be related with: https:// ...
Duplicated TextureLoadVirtualPageTable in GetCustomData functions in generated HLSL add to the total instruction count due to TextureLoad having side effects
UE - Rendering - Architecture - Materials - Dec 4, 2024When using materials with CustomData inputs, such as the Eye material with Iris Distance and Mask, Virtual Texture samples will increase the instruction count for each unique VTPageResult. Each cus ...
PlatformerGame has blank white background during intro cut scene on tvOS
Docs - Samples - Oct 10, 2016Blank white screen during opening cutscene tvOS 10.0 ...
AbsoluteWorldPosition and PDO not working correctly in SingleLayerWater calculations
UE - Graphics Features - Oct 1, 2021The licensee has provided a recommended fix for this issue. Please see the UDN. ...
Object Load order issue in Blueprint Editor
UE - Gameplay - Blueprint Editor - Oct 21, 2024[Image Removed] change FindObject to StaticLoadObject might fix this issue ...
HighResShot Alpha always 255
UE - Rendering - Graphics Features - Aug 15, 2025Expected behavior is that screenshot alpha should be 0 for pixels that did not have anything rendered into them. ...
Skeletal Mesh Cloth - Removing cloth collision sources doesn't remove the prerequisite, and the collision sources are not updated
UE - Runtime - Deformable - Mar 17, 2026[Link Removed] See proposed fix from partner: [Image Removed] ...
MakeMaterialAttributes and LandscapeLayerBlend produce unexcepted results for WorldPositionOffset
UE - Rendering - Architecture - Materials - Nov 8, 2021For comparison, this issue doesn't seem to occur when recreating the setup with Set Material Attributes/GetMaterialAttributes. It seems isolated to the Make/Break nodes. ...