Particles can flicker at the end of first emitter loop when interpolated spawning is enabled

UE - Niagara - Jun 18, 2020

Particles flicker at the end of first emitter loop when interpolated spawning is enabled This issue does not occur if interpolated spawning is disabled. This issue does not occur for any of the su ...

Sequencer Media Tracks trigger crash when an ImageSource is added

Media Framework - Jun 18, 2020

The same callstack appears in 4.24.3 (CL-11590370) but only when playing a Sequence with a Media Track that has a ImgMediaSource and Media Texture set on it. These repro steps work for 4.25 and 4.26 ...

Landscape that has tessellation enabled sometimes doesn't render in cooked build

UE - LD & Modeling - Terrain - Landscape - Jun 18, 2020

If a landscape uses a material that has tessellation enabled. Then in Editor and PIE things render correctly. But in a cooked package we sometimes hit this check. check(!bCurrentRequiresAdjacencyI ...

Packaging a blueprint only project with Nativization fails

UE - Gameplay - Blueprint - Jun 18, 2020

REGRESSION: Does not occur in 4.24 Packaging a blueprint only project with Nativization enabled results in a failure during the Staging phase. A message appears reading the following:Missing UE4Ga ...

Naming an enum parameter on a blueprint function "Category" places the function in a category

UE - Gameplay - Blueprint Editor - Jun 17, 2020

If the user gives an enum parameter in a blueprint function the name "Category", this will result in the function being added to a category in the My Blueprint panel. ...

BuildPlugin command cannot build plugins with platform extensions

UE - Foundation - Cpp Tools - Automation Tool - Jun 17, 2020

It seems like the BuildPlugin command is not copying all the dependencies in the HostProject.  Here are the errors reported by a customer:  DynamicCompilation.RequiresCompilation: Compiling D:\Per ...

SBasePoseViewport should use ExtendedBounds, not ImportedBounds

UE - Anim - Rigging - Jun 16, 2020

In accordance with CL-9139422 of [Link Removed], the SkeletalMesh ImportedBounds does not have an Extend operation. However, SBasePoseViewport, the UI for retagettes, continues to use ImportedBounds ...

Linked animation graph doesn't trigger anim notifications on dedicated server.

OLD - Anim - Jun 15, 2020

Linked animation graph doesn't trigger anim notifications on dedicated server. There is no expected message in log: LogBlueprintUserMessages: [HitReact_AnimBP_C_0] Client 0: HitNotify IsServer: tru ...

Crash playing in a Listen Server PIE session with an EQSTestingPawn in the world

UE - AI - Jun 11, 2020

REGRESSION Was not able to reproduce this in 4.24 Crash occurs when the user attempts to run a networking PIE session in a world containing an EQSTestingPawn actor. I was not able to reproduce thi ...

Anim Interface Implementation from Child AnimBP is not working

UE - Anim - Runtime - Anim Blueprints - Jun 11, 2020

The licesee expects to have Anim Interface Implementation from the Child AnimBP override the behavior in Parent AnimBP, even calling link Anim Class Layers in BP to link the ChildAnimBP layers is no ...