Unreal Engine Issues

Replay rollback state doesn't recreate per-instance components

Actor rollback state saved and restored by the replay system for placed actors in the level does not take into consideration per-instance replicated components, so they won't be recreated when the a ...

Renaming a Blueprint variable loses override in grandchild Blueprint

Renaming a Blueprint variable loses override in grandchild Blueprint. Modifying and saving the BP_Child fixes the issue with BP_Grandchild losing overrides.  ...

SynthComponent does not execute OnStop() after calling Stop()

SynthComponent does not execute OnStop() after calling Stop(). OnStop() will be called in PumpPendingMessages() via OnGeneratePCMAudio(). But after stopping the AudioComponent, the procedural Sound ...

Screen space reflection flickering

Flickering is occuring when using a reflection material with screen space reflection enabled. Did not start occuring until 4.19 and beyond.  Tested in: 4.23.1 CL#9631420, 4.24 P3 CL#10283392, 4 ...

LOD distance does not match between StaticMesh and SkeletalMesh

No dithered lod transition when changing Field of view

Game Crash when switching to full screen in Game with Sumsung Odyssey HMD device connected

crash log from lincesee: [2019.11.11-10.34.30:123][228]LogOutputDevice: Warning: Script Stack (0 frames): [2019.11.11-10.34.30:123][228]LogWindows: Windows GetLastError: 操作成功完成。 (0) [2019.11.11-1 ...

Build Error when using ENUM without 0 entry

PostProcessMaterial is not applied to NiagaraEditor preview

Sequences with a playback end on a subframe will not fire events that lie between the last whole frame and playback end

Sequences that end on a subframe will not evaluate past the last whole frame, preventing events from triggering that should. ...