Unreal Engine Issues
Unreal Engine Issues
Landscape normal behaves differently on CPU vs GPU
UE - LD & Modeling - Terrain - Landscape - Jul 16, 2020One of our licensees encountered this issue. Landscape normal is calculated differently on GPU vs CPU. See screenshot below: left is GPU (with Edit Layers enabled) and CPU (Layers disabled) [Image ...
loading hangs on new level with the new audio engine and media sound components
UE - Audio - Mar 1, 2018When enabling the AudioDeviceModuleName=AudioMixerXAudio2 setting in the windowsengine.ini file it causes new level loads to lock up. This may be due to the garbage collection stuck in a loop wai ...
Lighting channels not working as expected when enabling Ray Tracing Shadow
UE - Graphics Features - Lumen - Oct 13, 2020Non-Ray Tracing Shadows are only cast from lights on meshes assigned to the same Lighting Channel. When enabling Ray Tracing Shadows this is not the case. Lights will still cast Ray Tracing Shadows ...
[MetaSounds] - If the audio output hits an extreme Gain value, the Audio Meter Widget stops responding
UE - Audio - MetaSounds - May 20, 2022It's possible to have the Audio Meter widget stop responding if you set the Gain really high. It will cease to work as long as the MetaSound window is open. Closing and reopening the MetaSound windo ...
[AI] Changing NavMesh Resolution in config file does not update the quantFactor of existing navmesh
UE - AI - Navigation - Aug 6, 2025When we changed the resolution in the config, if you open a map and then look at the navmesh, the resolution it shows is the updated one from the config (assuming you haven't overridden anything) ...
Composite Decorator Graph nodes are not updating titles when changes are made to the properties of a node
UE - AI - BehaviorTree - May 5, 2022Composite Decorator Graph nodes are not updating titles. Upon closing and reopening the Composite Decorator Graph, the nodes do refresh to their properly set title. Repro Rate: 3/3 Tested this in ...
Texture Filter Nearest doesn't work in Packaged Shipping Builds
UE - Gameplay - Paper2D - Jun 28, 2023This is not a regression. Tested in //UE5/Release-5.1 CL23901901 Texture Filter Nearest isn't respected in Packaged Shipping Builds. When playing in editor, stand alone, or packaging in any other f ...
UE 5.4 - Specular/reflection disappears above 4096 resolution render
UE - Rendering Architecture - Aug 1, 2024After a viewport is more than 4096 pixels wide, Lumen's specular reflections buffer cuts its width off at 4096 pixels. It appears that the affected buffer is "Lumen.Reflections.ResolvedSpecularIndi ...
Editor Preference settings get wrongly saved within project instead of editor
Tools - Jul 23, 2018Various settings within the Editor Preferences window get saved within the project instead of the Editor. If someone were to heavily modify their Editor Preferences they would have to set it up agai ...
Child Actor Components do not update their internal properties when applying instance changes to other instances
UE - Framework - Components - Apr 14, 2022Child Actor Components do not update Materials when applying instance changes to other instances. Repro Rate: 3/3 Tested this in //UE4/Release-4.27 @ CL#18319896 and the issue did occur there, it ...