Copy Procedural Mesh from Static Mesh Component does not work correctly when the order of material slots is different

Rendering - Oct 15, 2019

This issue occurs when the section and material slot order do not match In this sample project:[Link Removed] According to a report from the licensee, the order of Sections seems incorrect.[Link R ...

Sorting a Blueprint variable into a subcategory separates variables into separate category structures

Gameplay - Blueprint - Oct 14, 2019

Within the Blueprint Editor, it is possible to create subcategories for variables to be sorted into. Doing so separates variables not nested into subcategories out into standalone, top-level structu ...

Event Blueprint Initialize Animation executes multiple times per instance per frame

Anim - Anim Blueprints - Oct 10, 2019

When editing the default values of a BP using an ABP, the ABP's initialize event will be triggered multiple times in a single frame.  ...

UCharacterMovementComponent OldVelocity is pre-additive while Velocity is post-additive

Gameplay - Player Movement - Oct 10, 2019

In UCharacterMovementComponent code such as PhysFalling, RestorePreAdditiveRootMotionVelocity is called before FVector OldVelocity = Velocity; leaving OldVelocity in a pre-additive state making furt ...

Cull Distance Volumes Affecting Actors After Being Deleted

Rendering - Oct 7, 2019

Cull Distance Volumes Affecting Actors After Being Deleted. Found in 4.22 CL# 7053642, 4.23 CL# 8386587, and 4.24 CL# 9428115 ...

Playing as a Pawn that is a Duplicate of a Blueprint Class doesn't create an Attribute Set

Gameplay - Oct 1, 2019

Creating a duplicate of a Blueprint class that has an AttributeSet seems to be interfering with the creation of the AttributeSet. ...

ClearMotionVector does not clear cloth motion blur velocity

Rendering - Features Teams - Sep 24, 2019

ClearMotionVector does not clear cloth velocity that causes temporal AA or motion blur. ...

Generate Lightmap UVs Fails Very Frequently on FBX Imported Meshes

Tools - Import - Sep 24, 2019

Generate Lightmap UVs fails very frequently on FBX imported meshes.  Found in 4.22 CL# 7053642, 4.23 CL# 8386587, 4.24 CL# 8971176 ...

Material Translator Uniform Folding Is Not Operating Properly

Rendering - Sep 19, 2019

Uniform folding is not working with material parameter collections along with one additional unnecessary instruction generated.  Found in 4.22 CL# 7053642, 4.23 CL# 8386587, 4.24 CL# 8748719 ...

Renaming Sprite Actor in Struct Blueprint, and closing the Editor causes de-reference

Gameplay - Sep 12, 2019

Paper Sprite actor set as a Default Value in a Blueprint Struct is set to none, when the sprite is renamed, saved, and the Engine is restarted. ...