Unreal Engine Issues
Unreal Engine Issues
Sequencer auto-generated thumbnails should not replace manually-catpured thumbnails.
UE - Anim - Sequencer - Jun 17, 2025Vertex Interpolate Node Doesn't Work with Lightmass
UE - Graphics Features - Lumen - Aug 8, 2018The vertex interpolate node doesn't work with lightmass. Found in 4.19 CL# 4033788, 4.20 CL# 4233996, and 4.21 CL# 4258917 ...
C.haos Cloth : ClothLOD does not change when out of view
UE - Simulation - Physics - Jan 6, 2022Cloth LOD Index is changed only during the mesh is on the screen. LOD Index is set to 0 at spawning, so clothing simulation runs as minimum LOD level until the mesh is in the field of view. It's no ...
Contact Offset no longer appears to have an effect
UE - Simulation - Physics - Jan 15, 2019When modifying the contact offset in a project it appears to have no effect. The setting that worked in a previous engine version (4.19) now collide in the same way as the default settings. ...
IVideoRecordingSystem::EnableRecording call on Windows shifts viewport drawing position
UE - Media Framework - May 12, 2022The viewport is shifted by the IVideoRecordingSystem::SetRecording call. This problem occurs in play standalone mode and packaged build running as window mode. (not occur in fullscreen mode) The vie ...
Toggling Vertex Colors on in Static Mesh Editor makes the viewport all white
UE - Gameplay - Aug 4, 2016When turning on the Vertex Color option in the static mesh editor, the whole viewport turns white. ...
Lighting channels are not supported with tiled lighting
UE - Graphics Features - Aug 15, 2016Reported via UDN ...
PVRTC texture is sampled as white when the uv value is very close to 0
UE - Platform - Mobile - Oct 20, 2021When the uv value is very close to 0 ( < 0.001 ), the boundary value of the PVRTC texture is sampled as white. please refer to attached images and sample project. problem goes away when changing th ...
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 ...
OSVR does not consistently render to HMD if OSVR Server is not open prior to opening editor/cooked game
UE - Platform - XR - May 18, 2016It seems like if OSVR_Server is not launched prior to opening the editor, vr-preview functionality will not work (even though the editor starts OSVR_Server at launch). Seems like server must be open ...