Unreal Engine Issues
Unreal Engine Issues
[Waveform Editor] - If a Sound Wave is trimmed or a transformation is added or removed while paused, play needs to be pressed twice to start the sound again
UE - Audio - WaveformEditor Plugin - Oct 6, 2022From [Link Removed] "There is still a bug happening with editing transformations on pause. If you play, then pause, and then edit a transformation, you have to press play twice to resume play (whic ...
[Attenuation][Air Absorption] - When the listener moves across the min-distance transition point, the HPF pops
UE - Audio - Spatialization - Apr 21, 2022A pop can be heard when crossing the Air Absorption distance range while using an HPF. From Slack: "I tracked it down to specifically the HPF – it's when the filter turns on, it jumps instantly to ...
Transient Subclasses of ABrush default to supporting external packaging
UE - World Creation - Worldbuilding Tools - OFPA - Aug 29, 2023ABrush::SupportsExternalPackaging overrides the base implementation of AActor::SupportsExternalPackaging which returns false for transient actors, but it doesn't call super. As a result, transient ...
Cracks in Nanite Tesselated Landscape
UE - Graphics Features - Nanite - May 13, 2024Landscape component edges can become disconnected when using Nanite Tessellation at the edges of weight-blended layers. ...
NavMesh debug material color is changed by lighting with high lux values.
UE - AI - Debugging - May 23, 2024There is a clear difference in color saturation for the nav mesh debug material between when lit by a light with low lux values (6) and when lit with high lux values (1000) and eye adaption is enabl ...
Flickering shadows/GI when DrawMaterialToRenderTarget is called per tick in PIE
UE - Rendering Architecture - Jul 11, 2024When DrawMaterialToRenderTarget function is called on tick and actors are spawned in game, the lumen shadow/GI visually flickers. Debugging shows that the lumen screen probes are flickering as well. ...
Broken TextureTest BP in Landmass plugin base content
UE - Graphics Tools - Terrain - Jul 15, 2024It appears that the Landmass plugin has a content dependency on the BlueprintMaterialTextureNodes plugin. If the BlueprintMaterialTextureNodes is not loaded, then the blueprint "/Landmass/Landscape ...
Sequencer- New takes will not respect project setting take number if initial asset doesn't have a shot number
UE - Anim - Sequencer - Jul 18, 2024With 5.2, we allowed the take separator to be multiple characters long. But it would appear that when using this feature, if you don't also have a 'shot number' before the take separator, then the n ...
ResavePackages commandlet (buildlighting) fails/asserts on reflection captures in non-visible sub-levels
UE - Graphics Features - May 13, 2025When building reflection captures through the ResavePackages commandlet, it frequently triggers an ensure inside of ReflectionEnvironmentCapture.cpp. If distributed shader builds start causing prob ...
Ray tracing scene doesn't reflect WPO with instance custom data
UE - Graphics Features - Ray Tracing - Sep 19, 2025When custom instance data is used to calculate WPO in a Material and applied to an ISM the WPO value in the Lumen scene (ray tracing scene) is different than the visible scene resulting in incorrect ...