Replay rollback state doesn't recreate per-instance components

Networking - Replay - Nov 26, 2019

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

Gameplay - Blueprint Compiler - Nov 26, 2019

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()

Audio - Nov 26, 2019

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

Rendering - Features Teams - Nov 26, 2019

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 ...

Build Error when using ENUM without 0 entry

Core - UnrealHeaderTool - Nov 26, 2019

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

Sequencer - Nov 25, 2019

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

Wake/Sleep events are not properly handled with Welding

Physics - Nov 25, 2019

Wake/Sleep events are not generated for components set to generate wake events after having a component not set to generate wake events welded to them. Wake/Sleep events are also not dispatched for ...