I'm experiencing intermittent crashes on iOS when launching a Flutter app after it was killed from the app switcher. The app works fine when resumed from background.
Environment:
- Flutter 3.38.3
Crash signature:
EXC_BAD_ACCESS (SIGBUS) Stack overflow in (null) compare:options:range:locale: >
Thread 0: CFStringGetLength → CFStringCompareWithOptionsAndLocale → UIKitCore ( 85+ inlined recursive calls)
What I've tried:
- Increased stack size to 64MB (
-Wl,-stack_size,0x4000000) - didn't help - Disabled iOS State Restoration - didn't help
- Added snapshot overlay in
applicationWillResignActive- helped for background issue, but not cold start
Key observation: The crash happens intermittently. Sometimes the app opens on 2nd attempt, sometimes on 5th. This suggests a race condition between Flutter engine initialization and iOS view hierarchy traversal.
Question: Is there a way to delay iOS view hierarchy operations until Flutter is fully initialized?
Any help appreciated!
