Thanks for your response, robnotyou. I upvoted it because it may be useful for others. As for our issue, I think I tracked this down today (after a week) to a difference in the git setup. Because of an issue in the CI setup, we ended up bundling a bunch of files that should be binary files as just the git-lfs (text) placeholders. Since our app logic was expecting real files here, it was crashing. More moving parts = more things that can go wrong I guess. Assuming that was the issue, Xcode was doing exactly what we were telling it to do 🤷‍♀️ Moving on...