Material and Animation do not stop even if Game pauses when Material domain is User Interface

Tools - UMG - Jan 22, 2020

For Animation and Tick, we have confirmed that pausing can be done by stopping Native Tick. But we can't stop with Material. Widget Component can change the handling of time with EWidgetTimingPolicy ...

Renaming a component in a parent blueprint can lead to data loss in its unloaded child blueprint.

Gameplay - Blueprint - Jan 20, 2020

A child blueprint won't be marked dirty if it hasn't been loaded and you rename a component on its parent blueprint. This can lead to a situation where the editor can be closed without prompting the ...

Nativized UMG widgets with animation tracks can sometimes assert with async loading enabled.

Gameplay - Blueprint - Jan 18, 2020

The incorrect use of NewObject() to instance nested class-owned subobjects will force StaticAllocateObject() to reconstruct the instance that was already constructed by the outer class ctor in nativ ...

UE4 viewport stutters when zoom in to closest point

Tools - Jan 17, 2020

When zooming in as much as possible in UE4's viewport, I notice a strange stutter almost as if the viewport is hitting a limit.  Please watch the attached screencapture. UE4_zoom_in_stutter.mp4[Ima ...

Incorrect level sequence playback in replay with sequence start time != 0

Networking - Replay - Jan 16, 2020

"Our dynamic duplicate in-memory replays broke when an artist put an ULevelSequencePlayer in one of the dynamic source level levels. The UMovieSceneSequencePlayer base class has PostNetReceive call ...

Exception crash when running Debug Game Configuration for a project installed on a different drive than Engine Installation

DevTools - Jan 13, 2020

Exception crash when running Debug Game Configuration for a project installed on a different drive than Engine Installation. ...

Montage_SetEndDelegate doesn't set for inactive, but unfinished montages, preventing clearing

Anim - Jan 7, 2020

If you call Montage_SetEndDelegate after a montage has begun blending out, but before it terminates, the end delegate will not be set because an active montage instance cannot be found. If an AI is ...

To activate cascade particle first time on sequencer is not work in a specific way.

Tools - Sequencer - Jan 6, 2020

The bIsActive flag on ParticleComponent is stored in a sequencer asset. If it's true, PartilceSystemComponent::ActivateSystem is skipped at FParticleTrackExecutionToken::Execute. In workaround, Set ...

The vertex color view mode in the vertex painting editor mode ceases to work when the project setting "Extend default luminance range in auto exposure settings" is enabled.

Rendering - Dec 31, 2019

When "Extend default luminance range in auto exposure settings" is enabled, the Color View Mode in the vertex painting editor mode ceases to work and without any warning to the user. ...