Unreal Engine Issues
Unreal Engine Issues
RuleProcessor is not listed in the Window menu in 5.4
UE - Editor - Workflow Systems - Jun 11, 2024Since CL-28416011, Sections in Window menu are broken and the RuleProcessor can not be registered in the menu. (See attached imanges) Following workaround restores the sections and fixes the issue. ...
In UE 5.4, some config variables are not getting saved correctly, due to the new User/Editor rules.
UE - Simulation - Visual - 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 ...
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. ...
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), ...
LWCLength precision issues
UE - Graphics Features - Nov 18, 2025Large World Coordinates tile-offset position data can result in artifacts far from the world origin, when using it as input for mathematical distance field generation. This can be mitigated by demot ...
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. ...
Animations on joints with ZXY Rotation Order don't work in 4.10
Tools - Dec 15, 2015Animations on joints with ZXY Rotation Order don't work in 4.10. The attached fbx has an animation that should show the thigh_l joint rotating back and then back to default position. This bug does ...
Substance Plugin causes packaged projects on Mac to fail to open
Tools - Jun 17, 2015If a project is packaged on the Mac while the Substance Plugin is installed, the resulting .app will fail to open. This does not generate a log. ...