[Bug]: App crashes with SIGKILL after returning from openAppSettings() when permission is changed on iOS

[gizemgizg]

Please check the following before submitting a new issue.

• I have searched the existing issues.
• I have carefully read the documentation and verified I have added the required platform specific configuration.

Please select affected platform(s)

• Android
• iOS
• Windows

Steps to reproduce

1. Run the app on a physical iOS device or simulator in debug mode.
2. Trigger a permission request that has been previously denied (e.g. photo library).
3. Call openAppSettings() from permission_handler.
4. In iOS Settings, toggle the permission (grant or revoke it).
5. Return to the app by tapping the back arrow or app switcher.

Expected results

iOS may terminate and relaunch the app when a permission is changed this is expected platform behavior. However, the process should exit silently and cleanly, without any crash output in the console. No SIGKILL log, no FilePickerPlugin error, and no "Lost connection to device" message should appear.

Actual results

The console emits an unexpected error from FilePickerPlugin followed by a SIGKILL signal, causing the debugger to lose connection. The app does not restart cleanly.

Code sample

Code sample

***** FilePicker canceled
* -[FilePickerPlugin documentPickerWasCancelled:] [Line 702]
Process 18194 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGKILL
    frame #0: 0x0000000233630cd4 libsystem_kernel.dylibmach_msg2_trap + 8
libsystem_kernel.dylibmach_msg2_trap:
->  0x233630cd4 <+8>: ret
libsystem_kernel.dylib`macx_swapon:
    0x233630cd8 <+0>: mov    x16, #-0x30               ; =-48
    0x233630cdc <+4>: svc    #0x80
    0x233630ce0 <+8>: ret
Target 0: (Runner) stopped.
Lost connection to device.
Exited

Screenshots or video

Screenshots or video demonstration

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Version

3.38.5

Flutter Doctor output

Doctor output

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.38.5, on macOS 15.7.4 24G517 darwin-arm64, locale tr-TR)
[✓] Android toolchain - develop for Android devices (Android SDK version 36.1.0)
[✓] Xcode - develop for iOS and macOS (Xcode 26.2)
[✓] Chrome - develop for the web
[✓] Connected device (5 available)
[✓] Network resources

• No issues found!