Animation Blueprint with Shared Transition "marked" dirty

Anim - May 14, 2019

Animation Blueprints which contain a shared transition used to transition between two animation states will be marked as "dirty" every time the blueprint is compiled and re-opened. ...

High-Poly Meshes with DistanceToNearestSurface is Completely White

Rendering - May 14, 2019

The distance field materials do not work on a High Poly mesh.   Found in 4.19 CL# 4033788, 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 6063286, 4.23 CL# 6398642 ...

Procedural Foliage Volume: Simulate() function doesn't work in Blue Print

Tools - Foliage - May 10, 2019

Procedural Foliage Volumes can be resimulated by clicking the Resimulate button. But they can't be resimulated from Blueprints, even if there is a Simulate() function that can be executed. Found in ...

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

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 ...

Spline Component Array Logic resulting in "Editor soft lock"

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 ...

Trigger Montage Ended Event results in Unhanded Exception

Anim - Animation - 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

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

Rendering - Cascade - 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 ...

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 ...

Phat Mirroring does not work correctly

Physics - Apr 25, 2019

There are various issues with mirroring in phat. Some issues are:Incorrect transforms(translation rotation and scaling) for both constraints and bodiesModifying un-selected constraints' angular lim ...