Steps to reproduce

1. Create a storyboard iOS native app
2. Create an Flutter module: https://docs.flutter.dev/add-to-app/ios/project-setup
3. Show a FlutterViewController using present: https://docs.flutter.dev/add-to-app/ios/add-flutter-screen#show-a-flutterviewcontroller-with-your-flutterengine
4. Run et run --config ios_debug_sim_unopt_arm64 in the Flutter module project (this will set the local engine environment variables)
5. Run the native app in Xcode, click the "Show Flutter" button and then dismiss the presentation

Expected results

App should run fine when using a local engine

Actual results

App crashes when presentation is dismissed

[FATAL:flutter/fml/memory/weak_ptr.h(100)] Check failed: *this.

It appears to crash here when accessing bridge->view:

Code sample

Use Flutter documentation examples

Screenshots or Video

No response

Logs

No response

Flutter Doctor output

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel main, 3.36.0-1.0.pre-385, on macOS 15.6.1 24G90 darwin-arm64, locale en)
[✓] Android toolchain - develop for Android devices (Android SDK version 35.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 16.3)
[✓] Chrome - develop for the web
[✓] Connected device (4 available)
[✓] Network resources

• No issues found!