Unreal Engine Issues
Unreal Engine Issues
[Merge Actor] Lightmap UVs are broken after merging meshes
UE - World Creation - Worldbuilding Tools - HLOD - Jul 11, 2022This issue occurs when merging static meshes that have multiple LODs. If they are using UV1 for lightmap index, after merging, the UV1 of the result for each LODs will all be differents, making the ...
"SetOwnerNoSee" setting does not work on Nanite meshes with SM6 enabled
UE - Graphics Features - Nanite - Nov 15, 2022Licensee description of project: There is a pawn with 4 cubes attached, the 2 red on the left are "normal" static meshes, and the 2 green on the right are Nanite meshes. The 2 bottom cubes have "se ...
BP multi-level inheritance does not correctly inherit 'Static' mobility
UE - Gameplay - Blueprint - Sep 8, 2022User reported an issue of a mesh not being visible when a project has multi-level blueprint inheritance. After reproing, I believe the root cause is DefaultSceneRoot of the grandchild BP class not c ...
CommonUI doesn't natively support a way to display keybinds in Rich Text
UE - Editor - UI Systems - UMG - May 3, 2023FMaterialResource::IsTangentSpaceNormal default value behaves differently whether material uses material attributes
UE - Rendering Architecture - Materials - Jul 18, 2023A UDN user has reported that a difference in appearance between two identical materials with the only difference that one uses material attributes. I have boiled down the issue to FMaterialResource ...
Collision between physicalized actors and instanced static meshes produce warnings.
UE - Simulation - Physics - Sep 25, 2023Collision between an instanced static mesh and a physics simulating actor (with "simulation generates hits events" enabled) results in the following warning: LogChaos: Warning: Collision handler en ...
ios threads freeze for almost one second when notifications pop up
UE - Platform - Apple - Mar 18, 2021see the UDN .Setting bOtherAudioPlayingNow to always false can workaround the problem, but it's better to have a more robust solution. ...
Engine crashes when building GPU Lightmass in large scenes
UE - Graphics Features - May 12, 2022Engine crashes when building GPU lightmass in larger scenes. This does not occur on smaller maps like the Unreal Engine Templates. I was able to reproduce this issue in CitySamples SmallCity map. T ...
Nanite meshes don't render to RVT
UE - Graphics Features - Nanite - Jan 16, 2023Static meshes that use Nanite never write to RVT. We've been recommending a workaround to create a secondary non-nanite mesh component that only writes to RVT, but that is a big overhead for product ...
Ensure failing when skeletal mesh uses CapsuleIndirectShadow while Anti aliasing method is MSAA
UE - Graphics Features - Feb 23, 2023Video of issue provided by licensee can be seen here - [Link Removed] ...