In my case, this started happening for iOS simulators when I moved from an Intel Mac to an M series Mac. I had the following line in my xconfig: EXCLUDED_ARCHS[sdk=iphonesimulator*] = arm64 Removing that seems to fix the problem.

I have a fair amount of legacy UIKit code since I support iPadOS as well. Is there a way around that? The app started out as UIKIt and I am progressively moving it over to SWiftUI as it supports more features.

Any updates on this? I am running into the same problem. In my case, I ship the beta builds using Developer ID but will be listing the app in the Mac App Store when I launch.

Did you ever get this working?

I upgraded to Xcode 11.4 and Catalina 10.15.4. I'm no longer seeing this. There were also similar crashes that seem to be fixed as well.

Drop works sporadically - works sometimes, fails sometimes.

No, not much progress on this yet. I have noticed that if I set a breakpoint and then continue, I don't see the problem.

Seeing this on Catalyst (actual app) too.

Thanks, this does seem to eliminate the crash.

That fixed it, thanks!