Unreal Engine Issues
Unreal Engine Issues
SetActorLabel() is slow on Landscapes
UE - Graphics Tools - Terrain - Landscape - Jan 7, 2025I've noticed calling SetActorLabel() on a Landscape will call PostEditPropertyChanged() which causes the Landscape Components to regenerate all collisions. As per the repro, this can take a long tim ...
Shading error after flipping normals on mesh
TM - Interoperability - Mar 11, 2025As far as I can guess is that in the initial state of the object, the vertex normals are as they come from the DCC, but after the modeling operation they get recalculated somehow that doesn't match ...
DirectoriesToAlwaysCook in platform specific configuration files are ignored by the cook process
UE - Platform - Console - Sep 5, 2025When DirectoriesToAlwaysCook is placed in a platform-specific configuration file, the cook process does not read that entry when cooking content for that platform. The editor is aware of the platfo ...
Self Shadow enabled causes shadow artifacts
UE - Graphics Features - Sep 4, 2015Shadow artifacts will appears when the camera is moving towards a character or if playing will appears with the character if Self Shadow is enabled for the character. Sample video and image attache ...
Hang and Memory Spike when you create an endless loop in AnimBP Event Graph
OLD - Anim - Oct 27, 2015Hang and memory spike (that doesn't go away) when you create an endless loop in AnimBP. Blueprints have a safeguard against this when you try to PIE with an endless loop, but I think the Animation ...
Infinite Script Recursion error crashes editor and produces UnrealScript errors in logs
UE - Gameplay - Blueprint - Aug 14, 2015Macro that causes an infinite script recursion error crashes editor and produces errors in output log referring to UnrealScript. Frequency: 3/3 Crash Reporter; [Link Removed] ...
Memory leak in Shootergame
Docs - Samples - Jul 27, 2015Memory leak when leaving Shootergame open for extended sessions. ...
LIVE: Beam Particle Systems distort if camera is placed along the tangent's axis
UE - Graphics Features - Nov 5, 2014A Beam Particle System that uses a tangent in its source and target setup will distort if viewed from along the tangent's axis. (See attached Picture) This hold true for all 3 axis . ...
Framerate stutter with Smooth Framerate set to 60/60 and in Fullscreen
UE - Graphics Features - Mar 4, 2015With a locked Smooth Framerate of 60 Min / 60 Max and in Fullscreen Standalone mode, there is a transparent bar like stutter in the framerate that runs through the playing cinematic. Also Reproduce ...
Material preview black when using Static Switch Parameter with Texture Objects
UE - Rendering Architecture - Materials - Aug 28, 2015Material preview doesn't render correctly with using a Static Switch Parameter with Texture Objects. See attached image ...