Scrubbing Animation Timeline in Montage does not trigger sound notifies.

UE - Anim - Runtime - May 9, 2019

Scrubbing an Animation Timeline within a Montage does not play a sound for Anim Notifies that specify "Play Sound." ...

Crash: Nativized AnimBP instances can assert on load in a cooked build with async loading enabled.

UE - Gameplay - Blueprint - May 9, 2019

This is a regression that was introduced alongside a memory optimization for Animation Blueprint assets. Suggested workarounds:Disable "Async Loading Thread Enabled" ORDisable Blueprint nativizati ...

Sequencer Rendering Bug When Rendering Custom Depth Of Animation Blueprint Preview

UE - Anim - Sequencer - May 8, 2019

Having an Animation Blueprint open when rendering a movie using "Render CustomDepth Pass" via Sequencer causes the Animation Blueprint Preview to be rendered rather than the cine camera actor set in ...

Changing ISM/HISM collision response at runtime does not update the collision properly.

UE - World Creation - Worldbuilding Tools - World Composition - May 8, 2019

Changing ISM/HISM collision response at runtime does not update the collision properly.  Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 6063286, 4.23 CL#6368684 ...

HISM Component not Rendering in Packaged Game using Shipping Configuration

UE - World Creation - Worldbuilding Tools - Foliage - May 7, 2019

HISM Component not rendering in a packaged game using Shipping configuration.  Working as expected in 4.21 CL# 4753647 Found in 4.22 CL# 6063286 and 4.23 CL# 6317373 ...

SetPhysMaterialOverride does not work properly when using Weld Simulated Bodies enabled AttachToComponent func

UE - Simulation - Physics - May 7, 2019

When using Weld Simulated Bodies enabled AttachToComponent func, the child Primitive Component's BodyIstance ActorHandle is released. As a result, in BodyInstance.cpp, the judgment of FPhysicsComman ...

Flipbook rendering distortion when adding local offset to Capsule Component.

UE - Graphics Features - May 6, 2019

Adding local offset to Paper Flipbook in UE.4.22 results in rendering distortion. ...

Dropping a packet containing an initial replication for a Custom Delta Property breaks replication

UE - Networking - May 6, 2019

Custom Delta Property NAK handling is done via Custom Delta Base States. Whenever we replicate a CDP, we have the implementing code return a Custom Delta Base State. However, before a CDP is ever re ...

Spline Component Array Logic resulting in "Editor soft lock"

UE - Gameplay - May 6, 2019

ReRunConstrictionScripts() on Tick() is causing an Editor "Soft- Lock" slow-down, When dragging a Spline Actor created from Blueprint; which utilizes custom construction script logic detailed in the ...

Blueprint Array/Map properties with DefaultToInstanced types are not instanced properly

UE - Gameplay - Blueprint - May 6, 2019

At a licensee, I discovered a problem where Blueprint-created array and map properties are not correctly propagating the ContainsInstancedReferenced property flag. This means that if you create a Ma ...