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." ...

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 - LD & Art - World Building - 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 ...

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 ...

Fill Data Table from CSV File crashes editor if the data table is open

Tools - May 6, 2019

Attempting to use the Fill Data Table from CSV File node will result in a crash if the CSV file is open when running. ...

Trigger Montage Ended Event results in Unhanded Exception

OLD - Anim - May 6, 2019

TriggerMontageEndedEvent is calling RemoveAtSwap after the NotifyEnd callback which is not safe if the ActiveAninNotifyState array is modified by the callback. WorkAround:   Add a Delay node befo ...

Deprecated: CharacterMovementComponent::bRequestedMoveUseAcceleration

UE - Gameplay - Player Movement - May 3, 2019

Licensee has brought into question the difference between NavMovementComp::bUseAccelerationForPaths Vs. CharacterMovementComponent::bRequestedMoveUseAcceleration. This led to a discussion in a Supp ...

Adding an LOD while in PIE or Simulate Cauases the Editor to Crash

UE - Rendering - Niagara - Apr 29, 2019

If you add an LOD while the editor is simulating or playing, the Editor Crashes. Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 5660361, 4.23 CL# 6063286 ...

Materials with a custom node with a Struct that has a function fails to compile for GLSL (Android) and uses a default material

UE - Rendering - Apr 29, 2019

A user has reported that Materials that contain a custom HLSL node that has a Struct with a function declared inside of it results in the material failing to compile for GLSL, causing the Material t ...

STEAM: Modifying the connection slot numbers can lead to a condition where the lobby is no longer joinable

Online - OSS - Steam - Apr 25, 2019

Session data no longer updates when the backend tells us our session is full which then limits the ability to modify the session size on the fly. Because of this, joinability will be set on the sess ...