Unreal Engine Issues
Unreal Engine Issues
GeneSplicerModule has linking errors in a Development target
zComponent - Archive - Oct 16, 2025The FArchiveMemoryStream class is defined in GeneSplicerModule and RigLogicModule. This generate linker error as this doesn't respect the "One Definition Rule" 1>Module.GeneSplicerModule.cpp.ob ...
Mutable - morph does not work for a skinned mesh with more than one uv channel
UE - Runtime - Mutable - Oct 16, 2025The morph functionality fails to change when the skinned mesh contains more than one UV channel in a Customizable Object. ...
Curve Debugger window is broken when viewing curves in the Anim Sequence editor
UE - Runtime - Animation - Oct 15, 2025The curve debugger is currently broken when viewing curves on anim sequences. It seems that only metadata/skeleton curves are displayed, and those aren't updating correctly or showing their type (m ...
Presenter Cloud will fail Uploading and Processing with almost empty scenes
TM - Core - Oct 15, 2025All Megascan asset libraries are missing
TM - Core - Oct 15, 2025All Megascans assets no longer appear in Twinmotion 2025.2 hotfix (46767548). Other libraries do not appear to be affected. ...
Light Leak Issue in Modular Buildings (Lumen HZBTraversal)
UE - Rendering - Features - Lumen - Oct 14, 2025Starting in Unreal Engine 5.6, disabling "r.Lumen.ScreenProbeGather.ScreenTraces.HZBTraversal" can lead to light leaking between adjacent or overlapping meshes. Also tested on Release-5.6, CL: 4523 ...
Smart Link inactive by default when NavLink is a ChildActor
UE - Runtime - Character - Oct 14, 2025When placing a NavLinkProxy in ChildActor, the link is not enabled by default. In this situation, setting SetSmartLinkEnabled to true does not establish the connection. You must first set it to fal ...
Spline mesh deform breaks WPO when used with Nanite meshes
UE - Rendering - Features - Nanite - Oct 13, 2025Nanite spline meshes deforming along the world normal vector do not use the same world normal as a non-Nanite spline mesh. This results in inconsistent behavior between Nanite and non-Nanite spline ...
Ensure in FOnlineSubsystemSteam::Shutdown when using OSS Adapter
UE - Online - Oct 13, 2025This looks to occur because of the order in which the OSS Adapter module and Steam OSS module are shut down. The OSS Adapter holds onto references to the OSS's interfaces, so when the Steam OSS modu ...