Async Tick error on Particle System

Rendering - Cascade - Jun 4, 2019

Whenever adding a Beam Data module along with Beam Source and Target, the Cascade editor produces an "NO ASYNC TICK" error. Tested in 4.21.2 (CL - 4753647), 4.22.2 (CL - 6547378), 4.23 (CL - 682596 ...

Crash when opening a new level while opening Editor Utility Widget after opening and closing it multiple times

Tools - Jun 4, 2019

Crash when opening a new level with reopened EditorUtilityWidget after opening and closing it multiple times. The cause of this issue is that UEditorUtilityWidgetBlueprint :: UpdateRespawnListIfNee ...

Cloth geometry disappears at high winds speeds when using Wind simulation

Physics - Clothing - Jun 3, 2019

When simulation a cloth at high wind speeds using wind simulation it appear to break. Pieces of the mesh will no longer render. ...

UnrealVS cannot be installed with VS2019 16.1

DevTools - UnrealVS - Jun 3, 2019

If a user has Visual Studio 16.1 installed, UnrealVS will report that it is not compatible and refuse to install. ...

Huge performance hit when recording a demo (demorec)

Networking - Replay - Jun 3, 2019

The current engine version (4.22) seems to suffer a huge performance hit when using the demo recording (demorec) feature. This issue is present in both the editor and the packaged game (developer bu ...

Importing a Binary version of an FBX with the option Use T0As Ref Pose enabled will cause deformations of the mesh

Tools - Import - Jun 3, 2019

When importing a binary FBX with the option Use T0As Ref Pose enable it appears that some models will be slightly deformed (see attached image). ...

Niagara Using a VAT has Intense Motion Blur

Rendering - Niagara - Jun 3, 2019

Niagara mesh particle using a VAT has Intense Motion Blur. Found in 4.22 CL# 6574378 and 4.23 CL# 6763247 Unable to test this in 4.21 and 4.20 as the project provided with assets needed was made i ...

Crash when duplicating the Child Actor Component class

Gameplay - Components - Jun 3, 2019

Creating a blueprint class with a child actor component and setting its actor class to Point Light, then copying and pasting it causes the editor to crash. Tested in 4.21.2 (CL - 4753647), 4.22.1 ...

GLTF Datasmith Files Import Incorrectly if Mesh Names Contain a "."

Datasmith - Jun 3, 2019

Importing a GTFL through the GLTF Datasmith import references incorrect instance meshes when their names contain a period. Which is very common when exporting from Blender which automatically adds t ...

Failed to launch project with -D3D10 Command Line Argument

Rendering - Jun 3, 2019

Adding the d3d10 command line argument to a package project results in a crash. This worked normally in 4.21 and below.  ...