I'm running the app in the debugger so the app is not being terminated. Once it is in the background, selectedPerson is set to nil but the call stack doesn't reveal anything unfortunately. I manage to "fix" this behaviour by saving the value when didEnterBackgroundNotification is triggered and setting it back when willEnterForegroundNotification is. This is more of a hack than an actual solution but it was just to demonstrate the issue.

This will also work: let _ = assignment?.description

Thank you!!! This fixed a similar issue for me!

Moreover, I filed a radar days after the first Monterey beta was released during WWDC. We're constantly told "file your bugs early" by Apple but I guess this isn't enough.

I was told that this should be fixed when Monterey shipped at the latest. Now, many apps will stop working when people start to upgrade to Monterey. Since this is a serious regression, I wonder why this bug hasn't been fixed yet.

This crash seems pretty random and occurs in different scenarios. At least it doesn't seem to be something we're doing wrong. Thanks for the radar!

Yes, using Core Data with CloudKit and List with ForEach. I have a 3 columns app (sidebar, list, detail view). The crash occurs when I select an item in the sidebar, which causes the list to update. Sometimes I'm able to select an item and the list refreshes without crashing but most of the time it does.

Silly me, forgot to call ntohs() on internalPort.