Unreal Engine Issues
Unreal Engine Issues
Incorrect error icon on stationary lights in a sublevel when the sublevel is first added
UE - Graphics Features - Jun 26, 2024When you add a level with stationary lights to another level as a sublevel they will show a first error icon on the lights. Once you close the project or refresh the level this icon is shown as nor ...
In UE 5.4, some config variables are not getting saved correctly, due to the new User/Editor rules.
UE - Simulation - Physics - Jul 24, 2024A lot of properties are not getting saved correctly to custom configuration files. This looks like that it can be cause by the FConfigContext::PerformLoad function. New conditionals have been added ...
Incorrect Lighting With Exponential Height Fog And Light Function Atlas
UE - Graphics Features - Jul 29, 2024There currently is a mismatch occurring when light function atlases are used in conjunction with exponential height fog. When the flag r.VolumetricFog.UsesLightFunctionAtlas is enabled, light shafts ...
The tooltip of a UPROPERTY enum is not refreshing in UDetailsView
UE - Editor - UI Systems - Oct 15, 2024There is an issue with UPROPERTY enums where the tooltip does not update as expected. When the DetailViewWidget is refreshed, the tooltips appear correctly. For example, ToggleShowingOnlyAllowedPro ...
MRQ - No Rayrtaced Shadows casted from Groom Caches with only 1 Spatial Sample
UE - Graphics Features - May 28, 2025A groom cache will not cast a raytraced shadow with only 1 spatial sample. It does not matter how many temporal samples you have. ...
Hardware Raytracing on Lumen can cause a crash on AMD Radeon GPUs
UE - Graphics Features - Lumen - Jul 29, 2025Hardware Raytracing support can cause a crash on AMD Radeon GPUs when creating the RT pipeline state. ...
Modifying PostProcess Film Slope can cause TSR to produce ghosting artefacts
UE - Graphics Features - Aug 11, 2025When TSR is active, the scene is dark, and a foreground object is lit, modifying the Film/Slope value on a PostProcessVolume can lead to TSR ghosting. TSR occurs prior to Tonemapping, so the issue ...
Point light missing issue on PowerVR GE8xxx when GPUScene is enabled
UE - Platform - Mobile - Sep 17, 2025On PowerVR GE8xxx devices (e.g., GE8320), running with GPUScene enabled on the OpenGL ES path, point/local Lights render nothing or significantly weak result. Withouy GPUScene(UniformView/UBO path), ...
Clearcoat shader disappears if any asset using the Material leaves lighting
UE - Graphics Features - Aug 19, 2015Clearcoat Shader will stop receiving lighting information if any mesh assigned the material using the shader leaves lighting. Also Reproduced in Launcher 4.9 Preview 4, Main-CL-2660934 [Image Remo ...
On Linux, FBX Import breaks content browser and RMB control in edior
UE - Platform - Linux - May 12, 2015After importing a FBX and closing the project, upon reopening the content browser does not show any assets and click/holding RMB does not allow camera to pan around. ...