Unreal Engine Issues
Unreal Engine Issues
Auto-generated lightmap doesn't use some UV islands with the packed lightmap UV
UE - Graphics Features - Sep 20, 2016Some faces from the UV0 for the texture UV are not used when repacking for the auto-generated Lightmap UV even if the faces are split and visible in the UV0. Attached example mesh. ...
Morph Targets not updating when scrubbing through Matinee timeline
Tools - Apr 6, 2016Users reporting that they cannot preview morph target animations while scrubbing through matinee. They suspect that it may be caused by this update in the release notes: "New: Optimized Matinee Act ...
FRunnableThread Suspend doesn't work on android
UE - Foundation - Core - Aug 27, 2018The FRunnableThread::Suspend() function call does not work Android devices Tested in 4.19.2 (CL - 4033788), 4.20.2 (CL - 4302132), 4.21 (CL - 4313833) ...
Japanese language indention issue when using Size to Content and Auto Wrap Text
UE - Editor - UI Systems - Feb 7, 2020Shading 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 ...
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. ...
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 ...