Unreal Engine Issues

Motion Blur Applied Incorrectly in Ortho SceneCapture2D

Motion Blur is applied incorrectly in a SceneCapture2D set to orthographic perspective. Works as expected in 4.21 CL# 4753647 Found in 4.22 CL# 7053642, 4.23 CL# 7208101, and 4.24 CL# 7223946 Thi ...

Mac freeze when completing basic interactions in Metal ES31 preview mode

Open Marketplace button is unresponsive

When pressing the Open Marketplace button in UE5 or the Marketplace button in UE4, nothing happens. This occurs in both UE5 Early Access and UE4 4.26.2. Tested in //UE4/Release-4.25 @ CL 14469661 ...

ETraceTypeQuery and EObjectTypeQuery not fully exposed to Python

The ETraceTypeQuery and EObjectTypeQuery enums declared in EngineTypes.h aren't fully exposed to Python. Both enums have 32 entries, but Python is only aware of the first 2 for ETraceTypeQuery and t ...

StaticMeshComponent occasionally doesn't simulate physics after SpawActor.

When spawning Pawns with a StaticMeshComponent with SimulatePhyscis=True, they occasionally may not simulate physics. This can be reproduced by simply repeating the respawn. The frequency of reprodu ...

Engine freezes when Level Sequence format is in seconds

When using the jumpbox with a sequence that is in seconds (not fps) the engine will freeze. This issue is occurring in Binary //UE5/Release-5.2 @ CL 25360045 This issue is occurring in Binary //UE ...

Ocean spline impacting landscape way outside of its bounds

From licensee: "[...] it seems that regardless of our settings and how far away the control spline is from the landscape edge, one corner of the landscape will always be impacted by the falloff and ...

It is not possible to export virtual layer masks (AI or from mesh) through the COLMAP exporter.

Found in 2.1.0.119011 (R210). The mask export doesn't work even when the masks are regenerated from the mesh. Outcome: Error appears: "The filename, directory, or volume label syntax is incorrect ...

Update Mesh Section incorrectly sets vertex colors for a Procedural Mesh

This is a regression tested in //UE4/Release-4.27 CL#18319896 Update Mesh Section incorrectly sets vertex colors for a Procedural Mesh. The closer a colors R, G, or B value is to 1.0 or 0.0 the mor ...

MetalRHI Asserts When Using "Profile GPU" With RHI-Thread/Parallel-Execution

When the RHI thread is enabled (with or without parallel-execution) for Metal it isn't currently possible to run "profilegpu" because the GPU timestamp emulation code isn't multi-thread safe and pro ...