after a lengthy conversation with an Apple Engineer, this is desired behavior on macOS Monterey and newer, so that .accessory and .prohibited apps are more or less killed outright when restarting, logging out of or shutting down the Mac, in order to reduce shutdown times. Too bad, imho.

also interested in this.

same here, any insight into what's going on?

Update: It's a macOS Monterey issue, not an Apple silicon / Intel issue. Also, I found out it has to do with having set NSApp activationPolicy to .accessory or .prohibited - if those are set, the app is terminated prematurely on shutdown / restart (-applicationWillTerminate: is never called). If it's .regular, it works like it should.

any update on this? It works the first time for me, the second time I enter PiP with an AVSampleBufferDisplayLayer, it fails. (iOS 15, b8)