Unreal Engine Issues
Unreal Engine Issues
Problems in skeletal mesh merge
There are a few issues a licensee has found with the skeletal mesh merge operation. See the UDN for more details and the proposed fixes. Note, the issue with the cloth merge is already logged in a ...
Groom bound to GeometryCache is unstable
UE - Editor - Content Pipeline - USD - Aug 10, 2021This issue seems to occur only in 4.27 with DX12. Did not repro in 4.27 with -dx11, nor in UE5 DX11/DX12. ...
Changes to Material Instance Parent don't appear to propagate to child instances if the child instance's editor window is open
UE - Rendering Architecture - Materials - Aug 16, 2021It looks like this occurs when the grandchild instance window is open. If you close and reopen the Grandchild's window the parameter appears as expected. I've attached a project with the setup step ...
Deleting the first instanced subobject entry from a Blueprint map or set variable's default value can result in an editor crash.
UE - Gameplay - Blueprint Compiler - Sep 27, 2021Deleting the first instanced subobject entry from a default value for a map or set variable can result in accessing an incorrect subobject for the element's value during reinstancing, which can then ...
Despawning or Converting to Spawnable/Possessable a BP with a Control Rig Component causes incorrect mapping
UE - Anim - Sequencer - Oct 6, 2021FBXUVs can create null entries that will assert later
UE - Editor - Content Pipeline - Import and Export - Oct 28, 2021Need to make sure we support nullptr entries or make sure we do not create such null entries. ...
Assign node on floats can cause a crash at runtime
UE - Gameplay - Blueprint Compiler - Apr 25, 2022This is from a UDN and I was not able to reproduce it locally in Release-5.0 or Ue5/Main, creating this issue for tracking. ...
Vehicle tire forces applied too high
UE - Simulation - Physics - Jul 22, 2022Vehicle wheel friction values are applied too high relative to the vehicle centre of mass. They are applied at the wheels original rest position rather than the base of the current wheel location. ...
Crash when using fbx exporter multiple time in the same process
UE - Editor - Content Pipeline - Import and Export - Sep 27, 2022The different fbx exporters do not cleanup the fbx sdk manager ...
WorldPosition in PostProcessMaterial returns inconsistent results in AfterTonemapping with TSR and TAA
UE - Rendering Architecture - Materials - Sep 20, 2022This behavior appears to be a regression new to UE5, as I tested in 4.25 and the issue does not occur. Interestingly, the issue clears up if you switch to No, FXAA, or MSAA antialiasing methods. Th ...