Unreal Engine Issues
Unreal Engine Issues
GeometryCollectionPhysicsProxy::FieldParameterUpdateCallback() not removing invalid Commands, leading to performance issues
UE - Simulation - Visual - Aug 30, 2025GeometryCollectionPhysicsProxy::FieldParameterUpdateCallback() not removing invalid Commands, leading to performance issues. The licensee has provided their analysis: We seem to have stumbled acro ...
Ensure in GatherSubobjectData
UE - Gameplay - Nov 27, 2023An ensure in GatherSubobjectData is being hit under certain inheritance conditions. This appears to be similar and potentially related to [Link Removed] and the fix at CL 16377852. Stepping through ...
Niagara color picker user parameter preview no longer updates until confirmation
UE - Niagara - Apr 18, 2025Starting with UE 5.4, the Color Picker Tool no longer updates preview values in real time for certain editor windows like Niagara when working with User Parameters. This behavior is a regression fr ...
Potential major HLOD dynamic shadow performance issues
UE - Graphics Features - Feb 22, 2017See https://udn.unrealengine.com/questions/336882/hlod-dynamic-shadow-issues.html . Potential major performance issues with HLOD and dynamic shadowing incorrectly drawing sub meshes. Also missing sh ...
Problems with high DPI settings and paper2d
Tools - Feb 19, 2018This appears to be a regression as the issue does not occur in 4.17. When setting the windows scaling to anything greater than 100% the tile map selector from Paper2D is off. Clicking on the tile ...
SteamVR Stereo layers are using incorrect orientation conversion
UE - Platform - XR - Mar 6, 2019"SteamVR stereo layers are using the wrong coordinate system conversion and are being improperly rotated. All other conversions in the SteamVR module are using the correct one, just this particular ...
Contact offset multiplier no longer working
UE - Simulation - Physics - May 10, 2019Changes in physics code have caused rolling objects to behave differently. https://forums.unrealengine.com/development-discussion/content-creation/50364-rolling-ball-jumps-on-flat-surface Conf ...
Open Sound Control Blueprint Plugin stops working around 1 minute during play
UE - Audio - Jun 3, 2020Messages are not received around 1 minute into playing when using OSC blueprint plugin. Test Project: [Link Removed] User workaround: https://forums.unrealengine.com/development-discussion/blu ...
[Quartz] - The multiplier does not always respected on the Quartz Quantization Boundary
UE - Audio - May 13, 2022Increasing the multiplier past a certain point causes sounds on a Quantization Boundary to struggle to play at the correct time. The repro above uses 1/32, but this also repros with other values. ...
AR Utilities plugin requirement missing from 5.3 documentation
Docs - Sep 25, 2023Setting Up a New AR Project page for 5.3 is missing important information about including the AR Utilities plugin. https://docs.unrealengine.com/5.3/en-US/setting-up-a-new-ar-project-in-unreal-en ...