Unreal Engine Issues

MovieSceneSequenceExtensions::AddSpawnableFromInstance no longer adds a spawnable correctly

Setting a poseable mesh component as leader component for a skeletal mesh component causes an access violation.

When a skeletal mesh component's leader component is set to a poseable mesh component, the application will run into an access violation when it tries to update animation curves and morph targets. ...

LevelSequence Editor consumes input, even if the user last focused the Level Viewport

LevelSequenceEditor has input priority over the Level viewport and other editor modules even though the Level viewport has been the last one selected. An example would be a cut operation. If you ha ...

Enabling "ShowFlag.PhysicalMaterialMasks" causes editor crash when physical material masks aren't yet imported.

When there is a physical material mask asset that has been created and applied to a mesh in the level without having a texture source imported yet, and then "ShowFlag.PhysicalMaterialMasks" is enabl ...

Placed AnimGetter nodes don't update their name even though their reference is renamed

Some animation node such as State Weight and Get Relevant Anim Time Remaining contains state name within in parentheses. But already-placed node does not update their name even thought the reference ...

Digital buttons for gamepad thumbsticks and triggers can fire multiple times per-frame in Game Input

In Game Input, the buttons for different thumbstick and trigger digital events (i.e. RightStickUp, LeftStickUp, LeftStickRight, etc) can actually fire multiple times in a single frame, even though w ...

Crash in FPipelineFileCacheManager::RegisterPSOStats

The game can crash when one thread clears RunTimeToPSOUsage while another thread is expecting it to contain a PSO it is registering stats for. Thread A:  calls CacheGraphicsPSO() Thread B:  calls C ...

[Audio Import] - Cue Points are stripped on import on 24-bit wave files

When importing wav files with a higher bit depth than 16, any cue points on the file are stripped.  ...

UE 5.5 delayed Python initialization causes issues

From this UDN: [Link Removed] The customer reports that this issue did not happen in 5.4. ...

Fix deadlock between sk component and sk build or import

Fix deadlock when skeletal mesh component is shown in the detail panel with physics body section category open and the skeletalmesh is re-importing or doing any other asyc task that need the game th ...