Unreal Engine Issues

OpenXR: per-frame Color/Depth mismatch caused by unsynchronized swapchain image selection across Game/Render/RHI threads (default xr.OpenXRAcquireMode=2)

Reported via UDN (case No107). Verified against //UE5/Release-5.6 sources; same code present in 5.5, 5.7, 5.8 and Main. Licensee reproduces on 5.3 and 5.6 with the Canon MREAL runtime. Symptom Fra ...

UserSceneTexture not working in Virtual Reality

User reports that UserSceneTextures used in Post Process Materials are only correctly rendered inside the left eye in VR. ...

Blocky artifacts in right eye when reflection captures are used

Niagara System is causing Application SpaceWarp to get disabled

Enabling MobileHDR on Meta Quest 3 device causes intermittent hang in splash screen

Using MobileHDR on an actual MetaQuest device (MQ3 tested) causes an intermittent hang/deadlock in the splash screen. This hang in the splash screen seem to happen maybe 1 in 5 times. The first ti ...

The infamous "smearing" is still present when SceneCaptureComponent2d is active

Console and DebugScreenMessages aren't visible after closing then re-opening VR Preview [SteamVR runtime only]

Right eye looks worse than left with Deferred

HZB occlusion is broken on Instanced Stereo

Other engine features requiring HZB data (such as per-instance GPU LOD selection occlusion culling or light grid culling) are also impacted regardless of whether r.HZBOcclusion is enabled. ...

Objects are culled prematurely in the right eye on Quest

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