iOS sometimes scroll gesture generate exception #20
Description
Sometimes while scroll the map, the touch isn't intercept and this error is thrown:
Unhandled Exception: 'package:flutter/src/gestures/converter.dart': Failed assertion: line 155 pos 18: '!state.down': is not true.
#0 _AssertionError._doThrowNew (dart:core/runtime/liberrors_patch.dart:40:39)
#1 _AssertionError._throwNew (dart:core/runtime/liberrors_patch.dart:36:5)
#2 PointerEventConverter.expand (package:flutter/src/gestures/converter.dart:155:18)
#3 _SyncIterator.moveNext (dart:core/runtime/libcore_patch.dart:152:12)
#4 ListQueue.addAll (dart:collection/queue.dart:715:25)
#5 _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:83:27)
#6 _rootRunUnary (dart:async/zone.dart:1136:13)
#7 _CustomZone.runUnary (dart:async/zone.dart:1029:19)
#8 _CustomZone.runUnaryGuarded (dart:async/zone.dart:931:7)
#9 _invoke1 (dart:ui/hooks.dart:203:10)
#10 _dispatchPointerDataPacket (dart:ui/hooks.dart:138:5)