Flutter bug with PopupMenuButton and TextFiend inside AlertDialog - flutter

Question

I have an AlertDialog that contains a TextField and a PopupMenuButton. When the TextField has focus and the keyboard is open, the AlertDialog is in a "raised" position, but if I press the PopupMenuButton, the TextField get unfocus, and the animations of the AlertDialog "going down" (because the keyboard disappeard) and the PopupMenuButton opening start togheter, and result in a wrong position of PopupMenuItems. How can I solve this?
I tried to edit the PopupMenuButton class but I don't know how to wait until the AlertDialog is repositioned to show the popup menu.
This is a sample of code that replicate the problem
return AlertDialog(
content: Column(
mainAxisSize: MainAxisSize.min,
children: [
TextField(),
PopupMenuButton(itemBuilder: (BuildContext context)=>[PopupMenuItem(child: Text('123')),PopupMenuItem(child: Text('456'))])
],
),
);
This is a gif showing the bug:
https://i.stack.imgur.com/dNjq1.gif

Answer 1

after getting some hours for researching that was PopupMenuButton normal behaviour, when I tried to recreate the PopupMenuButton manually, it work as that because when clicked it get the first position of the below menubutton so when i recreate it, it look like this
class TestWidget extends StatefulWidget {
#override
_TestWidgetState createState() => _TestWidgetState();
}
class _TestWidgetState extends State<TestWidget> {
void _showPopupMenu(Offset offset) async {
double left = offset.dx;
double top = offset.dy;
await showMenu(
context: context,
position: RelativeRect.fromLTRB(left, top, 0, 0),
items: [
const PopupMenuItem<String>(value: 'Doge', child: Text('Doge')),
const PopupMenuItem<String>(value: 'Lion', child: Text('Lion')),
],
elevation: 8.0,
);
}
#override
Widget build(BuildContext context) {
return AlertDialog(
content: Column(
mainAxisSize: MainAxisSize.min,
children: [
const TextField(),
GestureDetector(
behavior: HitTestBehavior.opaque,
onTapDown: (TapDownDetails details) {
FocusScopeNode currentFocus = FocusScope.of(context);
if (!currentFocus.hasPrimaryFocus) {
currentFocus.unfocus();
}
Future.delayed(const Duration(milliseconds: 500), () {
setState(() {
_showPopupMenu(details.globalPosition);
});
});
},
child: (const Icon(Icons.blender_outlined)),
),
PopupMenuButton(
itemBuilder: (BuildContext context) => [
const PopupMenuItem(child: Text('123')),
const PopupMenuItem(child: Text('456'))
])
],
),
);
}
}
so i think there's no better option for it. prefer not using popup and just design the design in a singlechildscrollview