Unreal Engine Issues

Investigate/Fix incremental component unregister

Streaming a level back in before it finishes streaming out behaves undesirably. When a level is streamed out the actors/components in the level are incrementally unregistered over multiple frames. ...

Fix primitive uniform buffer validation.

GPUScene primitive validation is currently busted and asserts. It looks like there are two problems: 1) NaN's in the entries can cause comparison issues, so a MemCmp would be better. 2) There's a ...

Fix TSR velocity extrusion on rotating

MPCook: Fix replication of UObject::CookAdditionalFilesOverride

MPCook relies on global data that is accumulated during package cooks on CookWorkers be replicated to the CookDirector. Some global data that is accumulated during package cooks is CookAdditionalFi ...

Editor crashes if Timeline Play Rate node is copied/pasted in blueprints

Editor crashes when Timeline Play Rate node is copied/pasted. Frequency: 2/2 Crash Reporter: [Link Removed] Callstack: MachineId:4E82586D46B558EA69EF0EAA821297B1 EpicAccountId:1558531203f84e81 ...

Fix pause flags when recycling sound sources

Issue is due to pause flags getting recycled when new sound sources are used from the sound source pool. This is a regression since 4.13, causing audio to pop. ...

Fix rotations when exporting a blueprint with a camera component

UMovieSceneSequenceTickManager does not consider settings of Fixed Frame Rate

Due to CL-20816478 UMovieSceneSequenceTickManager now calculates DeltaTime per Group instead of using DeltaSeconds directly. As a result, the FixedTimeFramerate in the project settings is being igno ...

Interchange: Static analysis fix for interchange manager

Fix a crash in Callback_ResolveMarker when handing a GPU crash

Licensees have reported crashes being triggered while the engine is resolving debug markers for an Nvidia Aftermath dump. This makes it difficult to properly investigate crashes ...