Handheld AR: Session fails to Start after minimizing/backgrounding the application

UE - Platform - XR - May 18, 2021

When the user minimizes or backgrounds an AR application, and re-opens it, new AR sessions will fail to start ...

Packaged ThirdPerson template with "start in vr" enabled packaged and launched with "-nohmd" crashes

UE - Platform - XR - Mar 31, 2021

The callstack is not XR-specific, it's just the engine trying to secure the audio device on startup, windows failing to return one, and the app not being able to continue safely. The crash does not ...

Running a VR template packaged game with -nohmd results in an AudioDevice crash

UE - Platform - XR - Mar 18, 2021

Running a VR template project with -nohmd causes the packaged game to crash on launch. Running with just -vr doesn't result in a crash. Tested in //UE4/Release-4.25 @ CL 14469661 and did not encoun ...

Scene Color node with UV input on a transparent material renders incorrectly in stereo

UE - Platform - XR - Jan 19, 2021

From Licensee: When we have Instanced Stereo enabled, all our materials that use Scene expression nodes (SceneDepth, SceneColor, etc...), render incorrectly in the right eye. It only happens to the ...

Custom depth gets cleared for each eye in VR

UE - Platform - XR - Dec 19, 2020

From licensee: "Expected behavior (as seen in UE 4.25...also confirmed in 4.24):"[Image Removed] "Actual behavior in UE 4.26:"[Image Removed] Report from a licensee: In VR when using custom dep ...

Third Person Character Package imports with linker errors

UE - Platform - XR - Oct 19, 2020

I was able to encounter these errors on the latest binary for 4.25.3 when doing a repro for a salesforce ticket. Here is the customers description:When importing the C++ ThirdPersonCharacter package ...

Multiplayer Preview in VR HMD input routed to all players

UE - Platform - XR - Sep 1, 2020

Multiplayer Preview in VR is not useful because HMD input is routed to all players. ...

Material Billboard Component doesn't respect screen size when taking into account Camera FOV and AR

UE - Platform - XR - Aug 27, 2020

Material Billboard Component skews when Camera's Aspect Ratio is changed, and varies in size with changes to the Camera's Field Of View. Reported in version 4.25.3 (CL-13942748) and tested in versi ...

Some developers reporting incorrect Preview in VR resolution for Steam VR

UE - Platform - XR - Aug 18, 2020

VR Preview Window is the wrong resolution, just showing the top left portion of the entire view. Somewhat similar symptoms to -[Link Removed]-, not exactly the same though.   This issue has not be ...

AutoLOD changes the static meshes LOD at different distances in VR Packages and Previews than in Editor

UE - Platform - XR - Jul 30, 2020

Packaged VR Projects and VR Previews change the LOD at a closer distance than in editor. ...