I just installed 27.2 final release. I'll file another report if it happens in 27.2. (Though mainly I'm doing what I can to steer clear of it.)

Unfortunately, I have experienced this hang in Xcode 27.2 RC. BUT it seems both to be less frequent and to happen less quickly after the prompt is displayed. So I have not experienced it when I am attending to Xcode—only when I return to Xcode and find it hanging over a prompt. This is an improvement, but it's not solved, at least in the release candidate.

Thank you, @Hasjime. Unfortunately, I've had this setting on and have been getting the crashes.

Thank you, @jhrireland. You say you resolved it "with Claude advice". Do you mean to say that Claude actually suggested this workaround? How could it POSSIBLY have arrived at such a seemingly arbitrary solution?

Thank you, @JLipsit! Every time there's a hang I try to find the offending command and whitelist it in Xcode > Settings > Intelligence > Permissions > Allowed Commands. But the list keeps growing even though it's up to over 80 commands. Also there are these issues: I can't know in advance the commands the coding agent might execute. So each new command is borne of an actual crash. Should I really whitelist rm?! Sometimes the offending command isn't even visible on the screen.

Bug report is number FB24792669. I'm not sure the link - I access it through Feedback Assistant. Good luck! (And perhaps file another report too?)

I filed FB24792669. Thanks!

Thank you, Albert! Xcode was NOT listed in Developer Tools. The only one there was Terminal.app, and it was switched off. I switched it on as well. I added Xcode.app and switch it on. Xcode did not have Full Disk Access either, so I added that. I'll see if the crashes continue!

My concern is with simulators, not physical devices. Thank you for that clarifying question. I just submitted feedback FB23226346.