Unreal Engine Issues
Unreal Engine Issues
Crash opening FaceARSample on iOS
UE - Platform - XR - Jul 26, 2019FaceARSample is crashing as soon as it is opened on iOS. Tested on a iPhoneXS 12.4. Regression: Yes I was able to get FaceARSample on the same device the previous release 4.22. ...
Light Leaking With Raytraced Shadows On Lights With Non-Zero Source Length
UE - Graphics Features - Ray Tracing - Jul 23, 2024Light sources which have the source length attribute set to a value greater than zero seem to be leaking light through occluding geometry (see the image below and repro project). Moving it away from ...
CharacterMovement doesn't clear velocity
UE - Simulation - Physics - Oct 11, 2024Velocities are not being cleared when physics simulation set to false. ...
Incorrect resolution used because SetProcessDpiAware() is not called when bAllowHighDPIInGameMode=False
UE - Rendering Architecture - Aug 8, 2025The incorrect resolution is used on computers with 4k monitors that use DPI scaling (default 150%) because the default for UE projects is bAllowHighDPIInGameMode=False which results in SetProcessDp ...
Transformed convex collision generates wrong navmesh
UE - AI - Navigation - Apr 25, 2022[Link Removed] The mesh in the repro project contains a transformed convex collision, which can be moved freely in the mesh editor, so the transform must be applied in following code block. (Also se ...
Custom data update crash - invalid memory when removing an instance from a UHierarchicalInstancedStaticMeshComponent
UE - World Creation - Worldbuilding Tools - HLOD - May 3, 2022This is a race condition, did not crash with -onethread. Attached the collected threaded callstacks, although they look misaligned. Licensee has provided a suggested fix. ...
Emissive is disabled by AO when Allow static lighting is disabled
UE - Graphics Features - Jun 9, 2022Engine Source is no longer part of xcodeproj
UE - Platform - Apple - Jun 15, 2015Reported by a user on AnswerHub, but when creating a code project with Binary Install, the Engine source is no longer included/visible in the .xcodeproj. This does not occur on Windows with VS ...