Flutter popupmenubutton isn't closed until select any popup item - flutter

Question

Everything works fine but popupmenubutton isn't closed until any popup item is selected. I do not understand why the popup menu does not close after clicking outside the popup menu and onCanceled does not called.
Please help me.
I have provided the source code below. Thanks.
//Call from Here
StatefulWidget> Scafold(
bottomNavigation,
TabBar
body: widgets>
//under tabBar
child: callAction(
tooltip: "Call Button",
child: Container(
height: double.infinity,
padding: EdgeInsets.all(20),
child: Icon(Icons.call)
),
),
)
//PopupMenuButton widget
enum CallActionType { DataCall, Sim1Call, Sim2Call}
class callAction extends StatelessWidget {
Widget child;
String tooltip;
callAction({#required this.child, #required this.tooltip});
PopupMenuButton<CallActionType>(
elevation: 8,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(15.0)),
onSelected: (CallActionType value) {
setState(() {
print(value);
});
},
//onCanceled didn't call
onCanceled: () {
print('You have not chossed anything');
},
tooltip: widget.tooltip,
offset: Offset(0, 100),
child: widget.child,
itemBuilder: (BuildContext context) => <PopupMenuEntry<CallActionType>>[
new PopupMenuItem<CallActionType>(
value: CallActionType,
child: Text('Action 1'),
),
new PopupMenuItem<CallActionType>(
value: CallActionType,
child: Text('Action 2'),
),
new PopupMenuItem<CallActionType>(
value: CallActionType,
child: Text('Action 3'),
),
],
);

Answer 1

PopupMenu will close smoothly, please see below code for example:
Widget popupMenuButton(){
return PopupMenuButton<String>(
elevation: 50,
padding: EdgeInsets.fromLTRB(5, 0, 0, 0),
icon: Icon(Icons.keyboard_arrow_down, size: 30, color: Colors.black),
itemBuilder: (BuildContext context) => <PopupMenuEntry<String>>[
PopupMenuItem<String>(
value: "One_Val",
child: Text("One_Val"),
),
PopupMenuItem<String>(
value: "Two_Val",
child: Text("Two_Val"),
),
PopupMenuItem<String>(
value: "Three_Val",
child: Text("Three_Val"),
)
],
onSelected: (String value) {
setState(() {
companyName = value;
});
},
);}
Please let me know for any query, Thanks.