Unreal Engine Issues
Unreal Engine Issues
ProceduralMeshComponent only supports 4 out of the possible 8 UV channels
UE - Graphics Features - Feb 4, 2021Licensee reports that Procedural Mesh Component is apparently limited to 4 UV channels, which indeed appears to be the case (e.g. UProceduralMeshComponent::CreateMeshSection arbitrarily processing 4 ...
Volumetric Clouds do not affect Niagara particles or Translucent materials
UE - Niagara - Sep 23, 2021Multi-process cooking does not complete in UE5.3.0
UE - Foundation - Data Pipeline - Cooker - Sep 26, 2023Projects with multi-process cooking enabled will not complete packaging. If MPCook is disabled, packaging can be completed. ...
DrawDebug elements on screen affect aspect ratio letterboxing
UE - Rendering - Architecture - Nov 1, 2023During gameplay when the view target camera's aspect ratio is not exactly the viewport's aspect ratio, the presence of rendered debug draw elements (DrawDebugArrow, etc) makes the viewport's rendere ...
Copy Actors out of play mode ( 5.3.1 )
UE - Editor - Workflow Systems - Dec 22, 2023From UDN case #00645621: Is it possible that this function has been deactivated? In 5.03 I can copy objects from the game mode. ...
Children of Retainer Box cannot be interacted with when visibility is set to "Self Hit Test Invisible"
UE - Editor - UI Systems - Jun 19, 2017When there is a Retainer box with the visibility set to "Self Hit Test Invisible" and has children, the children cannot be interacted with. Children such as a button cannot be clicked. This issue c ...
Particles Do Not Obey Lighting Channels
UE - Niagara - Apr 17, 2018Particle systems ignore lighting channels - no matter what channel a light is on (even if no channels are selected), it will affect lit particles. Changing lighting channels on the particle itself h ...
Geometry in sublevel created with "Load Level Instance" ignores level transform
UE - LD & Modeling - Modeling Tools - BSP - Sep 26, 2017Geometry in sublevel created with "Load Level Instance" ignores level transform. Other objects, such as Static meshes are affected by the transform. This issue is not a regression. Versions tested: ...
Blurry RVTs after camera jump
UE - Graphics Features - Aug 7, 2025When using Runtime Virtual Textures (RVT) on landscape in UE 5.5+, nearby tiles may remain blurry (low-resolution mips) after launching PIE or making large camera jumps (e.g. via bookmarks or viewpo ...
Vehicle does not create an overlap event in 4.8 preview 2
UE - Gameplay - May 18, 2015If the user places a trigger volume into the level and then drives the car into it the over lap event will not trigger ...