Steps to Reproduce

Crash on long press a floating action button, release (somewhere else on the screen) and long press
again.

1. Fresh install, create an app
2. Create an app using 'flutter create test_app'
3. Run on 'iPhone X' simulator
4. Long press on floatingActionButton, then move cursor to other part of the screen and release
5. Second Long press on floatingActionButton
6. KABOOM - app crashes

Logs

Launching lib/main.dart on iPhone X in debug mode...
Starting Xcode build...
Xcode build done.
Syncing files to device iPhone X...
*** First throw call stack:
(
0 CoreFoundation 0x000000010f6411e6 __exceptionPreprocess + 294
1 libobjc.A.dylib 0x000000010d21a031 objc_exception_throw + 48
2 CoreFoundation 0x000000010f646472 +[NSException raise:format:arguments:] + 98
3 Foundation 0x000000010ccf364f -[NSAssertionHandler handleFailureInFunction:file:lineNumber:description:] + 165
4 Flutter 0x000000010de53349 _ZN5shell19AccessibilityBridge11HandleEventEP12NSDictionaryIP8NSStringP11objc_objectE + 269
5 Flutter 0x000000010de3f8bc __48-[FlutterBasicMessageChannel setMessageHandler:]_block_invoke + 124
Lost connection to device.
6 Flutter 0x000000010de561c6 _ZNK5shell21PlatformMessageRouter21HandlePlatformMessageEN3fxl6RefPtrIN5blink15PlatformMessageEEE + 166<…>

Yonis-MacBook-Pro:Flutter yoni$ flutter analyze
Analyzing Flutter...
No issues found! (ran in 1.2s)