I am experiencing similar issue.

My Problem ->

Simulator only allows 18.3.1, and the app runs fine...the app runs fine on physical device on lower IOS version but crashes at 18.3.2 version immediately after login.

and the super weird thing is that, it crashes only if I login via apple, it doesnot crash on login with google and normal login, the app runs totally fine if I login via other mechanism.

Apple is rejecting my issue citing, app crashes after login ( ipad air ( 5th gen) 18.3.2 ). I think we have a same problem. do you also use signin with apple?

I have no idea how to fix this, spent days. please let me know if there is any fix.

I think this is due to apple's 18.3.2 new security patch.