Child Actor Component Actor Duplicates and Persists After Play

Gameplay - Sep 26, 2019

When an actor spawns another actor using AddChildActorComponent that comes alphabetically before it based on blueprint name it will spawn an extra actor that will persist when the scene is stopped d ...

Race condition in full builds of UE4 engine source

DevTools - UnrealBuildTool - Sep 26, 2019

This is a race condition caused by how "Clean.bat", a batch file used during rebuilds, tries to manually rebuild the UnrealBuildTool project when it runs. This causes a spam of UnrealBuildTool build ...

HDRI Backdrop Actor not working on mobile

Platform - Mobile - Sep 26, 2019

The new HDRI Backdrop actor does not appear to be functioning on mobile. ...

Enable SkinCache stretches the Cloth Sim

Physics - Clothing - Sep 26, 2019

[Image Removed] ...

EQS Debug Draw Shows Old Query Information

Gameplay - AI - Sep 26, 2019

Sample project: [Link Removed] Debug draw update correctly: [Link Removed] Debug draw update incorrect: [Link Removed] ...

Image appears blank when using Export Render Target on Android

Platform - Mobile - Sep 25, 2019

When using the node Export Render Target it appears that the image produces does not display as expected and appears blank when used on Android ...

VR Mode - Landscape Mode - Flatten tool crash

Tools - Landscape - Sep 25, 2019

Crash will occur when attempting to use Flatten tool on landscape while in VR Editor. Confirmed in 4.24 MAIN @ CL 9084132 Confirmed on Vive and Rift ...

Long Load Times With PIE When Using Tessellation On Landscapes

Tools - Landscape - Sep 24, 2019

When having large landscapes with a tessellated material, loading time after hitting Play in Editor is much longer than in 4.22. Found in 4.23 CL# 8386587 and 4.24 CL# 8971176 Working as expected ...

Child actor passes a string to it's parent's overloaded constructor the incorrect string is received

Gameplay - Sep 24, 2019

When a child actor passes a string to it's parent's overloaded constructor using an overridden function that returns a string it won't receive the correct string. I have verified that the correct fu ...

Combo Box String widget doesn't change color via function

Tools - Slate - Sep 24, 2019

Attempting to change the Foreground color of a Combo Box String in the Graph tab of the owning widget Blueprint has no effect. Tested in 4.20.3 (CL - 4369336), 4.21.2 (CL - 4753647), 4.22.3 (CL - 7 ...