Unreal Engine Issues
Unreal Engine Issues
Soft angular constraints solve velocity like hard constraints
UE - Runtime - Simulation - Jul 17, 2025Soft angular constraints are solving velocity like hard constraints. Instead of swinging back and forth, the affected body just snaps to 45 degrees. Check the steps to reproduce for more details. Th ...
Intermittant motion blur issues in content heavy scenes
UE - Rendering - RHI - Jul 30, 2026When using the following RHI/Render thread/GT sync configuration:r.OneFrameThreadLag 1r.GTSyncType 1 The previous skinning bone data can be corrupted and introduce visual artifacts on everything us ...
Raw Input plugin fails to process some negative values
UE - Gameplay - Input - Aug 22, 2023Came from a UDN: [Link Removed] Proposed fix is to change `FRawInputWindows::ParseInputData` to use this logic instead: ``` ... USHORT BitSize = ValueCapsBuffer[iValue].BitSize; LONG SizeMask ...
CRASH: 4.6.1 When running a dedicated server
UE - Gameplay - Blueprint - Dec 24, 2014Crash Report: [Link Removed] <unknown module>! KERNELBASE!RaiseException() <unknown module>! UE4Editor_Core!FOutputDeviceWindowsError::Serialize() <unknown module>! UE4Editor_Core!FMsg::Logf__VA( ...
Fix log spam when using a vive wireless adpater
UE - Platform - XR - Dec 19, 2018We need to handle TrackedDeviceClass_DisplayRedirect as a valid device in SteamVRController.cpp ...
Fix function forwarding in demo drivers in instant replays
UE - Networking - Jul 13, 2020Demo drivers that are actively playing back a replay while still connected to another server as a client (via game net driver) will generate warnings due to the function forwarding code (UNetDriver: ...
Depth buffer collision kills all particles after 1 second
UE - Niagara - May 12, 2020Somehow the namespace broke between the collision and the trace modules. [Image Removed] [Image Removed] ...
Breaking level instances does not adequately fix up actor references
UE - World Creation - Worldbuilding Tools - Level Instances - Aug 29, 2022Details in link. ...
RayTracing Final Gather is not working in UE 5.1
UE - Graphics Features - Ray Tracing - Apr 12, 2023Further Comments: Customer is using the deprecated ray traced mode. ...
Copy Actors out of play mode ( 5.3.1 )
UE - Editor - 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. ...