Aerospace freezes when debugging Xcode with "My Mac (Designed for iPad)" as destination

[FriedSnowman]

Aerospace will freeze and become extremely unresponsive when debugging an Xcode iOS project using "My Mac (Designed for iPad)" destination.

Reproduction:

• Make a blank iOS project
• Write code that will crash

import SwiftUI

struct ContentView: View {
    var body: some View {
        VStack { }
            .onAppear {
                let a: String? = nil
                var b: String = ""
                b = a!
            }
    }
}

• Run as My Mac (Designed for iPad)
• As soon as the app launches and crashes, Aerospace will become barely responsive until the debugging session stops.

aerospace debug-windows doesn't work because the crashed application isn't visible nor interactable. No crash logs because Aerospace never crashes.

OS: Version 15.0 (24A335)
Xcode: Version 16.0 (16A242d)

Checklist

• I've searched for duplicates. My search queries were (please don't forget to search in closed issues too):
  • lag
  • xcode
  • freeze
• I've read the guide https://nikitabobko.github.io/AeroSpace/guide
• I've searched in the documentation (https://nikitabobko.github.io/AeroSpace/guide & https://nikitabobko.github.io/AeroSpace/commands). My search queries were:
  • lag

aerospace CLI client version: 0.14.2-Beta 0cb8dbdfc5ee73b8cbc200f175f467ebead55201
AeroSpace.app server version: 0.14.2-Beta 0cb8dbdfc5ee73b8cbc200f175f467ebead55201

[jakenvac]

Although not obvious, I think this is a duplicate of #497

When an app's main thread is blocked (like a crashed app or an app stopped at a breakpoint) the AX (accessibility) API's can't communicate effectively with the problem app and causes a hang.

Currently there is no workaround, although some ideation has happened on the linked issue.

[patricorgi]

I have a similar problem but with apps which need a long time to quit, e.g. calibre (a book library app) and Transmission (a torrent downloader). These apps take a few seconds to quit when pressing Command + q. During this quitting time, the apps are completely irresponsive, which seems to be affecting AeroSpace as well - I'm not able to switch to a different workspace even with Mission Control. Is there a way to mitigate or avoid these freezes?