Unreal Engine Issues

Crash when adding sphere reflection capture to a scene

An occasional crash occurs when adding a sphere reflection capture to the scene from the place mode panel. This issue has a low repro, but has been seen a couple times. Repro rate seems to be around ...

Load times for the editor appear to have increased

The editor appears to have longer load time as compared to an older engine version (4.20.3 loaded in seconds while newer version appear to load the same project in over a minute) ...

Lighting channels on static mesh doesn't change correctly at runtime

If call SetLightingChannels in blueprint to set a static mesh's lighting channels at runtime, the mesh in the viewport seems can't update to the new lighting channel setting.  A weird thing is, if ...

AfterMotionBlur Translucent Material With Local Exposure Enabled Causing Artifacts

When TSR is enabled, translucent materials using the AfterMotionBlur translucency pass cause visual artifacts when local exposure is active. The artifacting is believed to occur because the local ex ...

LastRenderTime does not update when Occlusion Culling is disabled

When disabling Occlusion Culling, Components will not have their Last Render Time updated. ...

MultiProcessCook Shader Symbols fail to write when two workers race and try to write them at the same time

When shadersymbols are requested, cooking shaders writes the symbol files into {Project} /Saved/ShaderSymbols/<PlatformName>. These symbols are written by the function FShaderSymbolExport::Write ...

Static Mesh Component Scale Displays Incorrect Values on Static Meshes as Scene Roots

Static mesh components incorrectly display scale information through the Detail's Pane and Blueprint editor window until simulation is pressed. This occurs if the static mesh component is moved to t ...

Sequencer Render: Animation not updating for a moment on camera cut

When rendering from sequencer to an image sequence, character animation stops for 2 frames after a camera cut. This hitch does not occur when playing the sequence in PIE I've attached some sample d ...

MoviePipeline: Field of View doesn't match viewport when using the Squeeze Factor property

ScreenshotCapturedDelegate is never called in HDR

In UGameViewportClient::ProcessScreenShots, when bHdrEnabled is true, the Bitmap array is never filled (the capture code uses BitmapHDR), so ScreenshotCapturedDelegate is never called for any custom ...