Pinning a pushed window to a wall breaks pushWindow for all other apps on the system

I posted https://developer.apple.com/forums/thread/809481 yesterday about an issue I discovered with pushWindow in visionOS 26.2 RC, but today I discovered a second problem with pushWindow.

If window A calls pushWindow to present window B, and the user pins window B to a wall, the following unexpected behaviors are observed:

• Window B spontaneously disappears.
• If the user re-launches the (still running) app from the visionOS home view, both window A and window B appear simultaneously. I assume only window B should be visible at this point, since window A pushed window B.
• If the user closes window B, it's now impossible to present window B again. Calls to pushWindow appear to be ignored.
• If the user force-quits the app and relaunches it, and pushWindow is called again, window B appears, but window A remains visible.

I also noticed this surprising behavior:

• This broken state of pushWindow behavior now affects all other apps on the system that may call pushWindow in the future, not just the app whose pushed window was pinned above.

A workaround is to reboot the device, and then the system will behave as expected until the next time the user pins a pushed window.