Stereo layers with depth render translucency as black on Oculus Quest

UE - Platform - XR - Sep 27, 2019

[Link Removed] ...

Race condition in full builds of UE4 engine source

UE - Foundation - Cpp Tools - 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

UE - Platform - Mobile - Sep 26, 2019

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

Investigate deprecating byte-swap during save

UE - Foundation - Core - Sep 26, 2019

All major UE target platforms are little-endian. Saving packages with byte-swapping seems to have been broken for more than six years, when CL# 1495479 changed `FArchive::ByteOrderSerialize()` so th ...

EQS Debug Draw Shows Old Query Information

UE - AI - Sep 26, 2019

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

VR Mode - Landscape Mode - Flatten tool crash

UE - LD & Modeling - Terrain - 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 ...

ClearMotionVector does not clear cloth motion blur velocity

UE - Graphics Features - Sep 24, 2019

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

Long Load Times With PIE When Using Tessellation On Landscapes

UE - LD & Modeling - Terrain - 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 ...

Combo Box String widget doesn't change color via function

UE - Editor - UI Systems - 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 ...

Generate Lightmap UVs Fails Very Frequently on FBX Imported Meshes

UE - Editor - Content Pipeline - Import and Export - 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 ...