Mobile VR - Foliage (HISM) crash

Tools - Foliage - Jun 7, 2019

HISMs cause mobile VR app to crash. Confirmed in 4.23 MAIN @ CL 6829265 ...

Crash when creating an animation

Tools - UMG - Jun 7, 2019

The editor crashes when trying to add an animation key frame for the row fill setting for a grid panel ...

Mobile VR - Render Targets not working with Mobile Multi-View

Virtual Reality - Jun 6, 2019

Render target materials display as black on mobile VR when Mobile Multi-View is enabled. Also confirmed with LDR capture source. User also reports issues with scene depth (potentially fixed with U ...

Instances Created From Merge Actor Have Corrupt Lightmaps

Rendering - Jun 6, 2019

Instances Created From Merge Actor Have Corrupt Lightmaps. Working as intended in 4.20 CL# 4369336 and 4.21 CL# 4753647 Found in 4.22 CL# 6574378 and 4.23 CL# 6842436 This is a regression. ...

Enabling Omni Directional Stereo Capture Breaks Draw Material to Render Target Functionality

Rendering - Jun 5, 2019

Enabling ODS (omni directional stereo capture) in project breaks Draw Material to Render Target functionality. Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 6574378, 4.23 CL# 6836133 ...

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 ...

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 ...

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.  ...

Constant interpolation in animation curve points appears to prevent material updates after hitting apply

Anim - Animation - May 31, 2019

When changing the key interpolation of a material curve in an animation to constant it appears to break the updating of the material after the changes are applied. Until the changes are applied it a ...