Forum Discussion
Unity OpenXR Meta regression: passthrough doesn't work when focus is lost and regained
Problem: 1. Passthrough initially works fine in the app. 2. Take the headset off, the display goes dark. 3. Put the headset back on, the display turns back on. 4. Unexpected: passthrough no longe...
Yeah, this seems to be a known issue with recent Meta/Unity OpenXR integrations. When the app loses and regains focus (like when removing the headset), the passthrough layer can fail to reinitialize properly. A temporary workaround is to manually re-enable the passthrough feature in code when focus is regained — you can hook into Unity’s OnApplicationFocus or OnApplicationPause. Hopefully, Meta or Unity will patch this in an upcoming release!"
Unfortunately, hooking into OnApplicationFocus doesn't work. The passthrough layer has already been improperly disposed of by the time this Unity method is invoked.
I worked around this regression by creating a custom OpenXR composition layers feature. But it's a rather low-level solution that I don't imagine most devs are going to do.