Unreal Engine Issues

Copy/pasting folders and root tracks doesn't paste the root tracks

Simulate motion vectors can fail on camera cuts

r.MotionVectorSimulation 1 should simulate motion vectors when cutting cameras, but this appears to be broken on some loops. ...

Set end frame has incorrect bounds type

When calling Set End Frame the TRangeBound type defaults to inclusive causing the range to go from [0, 50) to [0, 50]. This causes the section to last for one frame longer than it should. ...

Exclude Default Property Tracks array only excludes last element

Only the last element of this array is taken into account when adding defaults tracks. It looks like in FLevelSequenceEditorToolkit::AddDefaultTracksForActor a map is built mapping the property owne ...

Movie Scene Capture - DX12 Render Artifacts and Delay

If using the Legacy renderer (Movie Scene Capture) with DefaultRHI DirectX12, there's new delay and also some frames get weird artifacts.   However, the delay and artifacts do not appear when using ...

Python function unreal.AssetRegistry.get_assets_by_class is broken

Repro Rate: 3/3 This issue was reproduced in //UE5/Release-5.1 at CL 23058290. This is confirmed to be a regression since the errors do not occur on the previous version and is regression tested o ...

Crash when not saving level after using MovieRenderQueue for that level

Crash when not saving level after using MovieRenderQueue for that level Repro rate 3/3 Regression Yes, issue is not reproduced on //UE5/Release-5.0-EarlyAccess at CL 16682836 from LauncherFatal er ...

Get Mouse Position Blueprint node returns different values outside of viewport depending on whether it was called from Event Tick, or within an Actor function

There seems to be a discrepancy between the output of Get Mouse Position node depending on whether the node is inside an Actor function or called from Event Tick. If the node is present inside a fun ...

If pasting a section causes an overlap, don't allow it if the track doesn't allow overlapping sections

Binding lifetime sections aren't meant to overlap, but duplicating one, or pasting one can cause them to overlap, triggering an ensure. Duplication and copying and pasting are typical actions, so th ...

Access Violation crash deleting a Widget Blueprint with an unsaved Animation track - FSequencer::Tick()

Encountered an Access Violation crash while deleting an Widget Blueprint with an unsaved Animation Track. The callstack references FSequencer::Tick(). I was not able to reproduce this issue in UE4/ ...