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Type: Bug
Resolution: Fixed
Priority: P3: Somewhat important
Fix Version/s: None
Affects Version/s: 6.3.2
Component/s: GUI: Menus
Labels:
- Reported_by_support_standard

Platform/s:

macOS

When selecting different Menu items which open sub menus on macOS with Qt 6.3.2 the menu highlighting some times highlights the previously selected menu while another menu is actually opened.

A way to reproduce:
1) use the QML example code which was provided in ~~QTBUG-98716~~:

import QtQuick
import QtQuick.Controls

Window {
    id: window
    width: 1280
    height: 720
    visible: true

    Menu {
        id: contextMenu
        title: "MainMenu"
        cascade: true

        Menu {
            title: "Menu 1"
            MenuItem { text: "Option 1";}
            MenuItem { text: "Option 2";}
            MenuItem { text: "Option 3";}
        }

        MenuItem { text: "Option 1";}
        MenuItem { text: "Option 2";}
        MenuItem { text: "Option 3";}

        Menu {
            title: "Menu 2"

            Menu {
                title: "Menu 2.1"
                MenuItem { text: "Option 1";}
                MenuItem { text: "Option 2";}
                MenuItem { text: "Option 3";}
            }
            Menu {
                title: "Menu 2.2"
                MenuItem { text: "Option 1";}
                MenuItem { text: "Option 2";}
                MenuItem { text: "Option 3";}
            }
        }
        Menu {
            title: "Menu 3"

            Menu {
                title: "Menu 3.1"
                MenuItem { text: "Option 1";}
                MenuItem { text: "Option 2";}
                MenuItem { text: "Option 3";}
            }
            Menu {
                title: "Menu 3.2"
                MenuItem { text: "Option 1";}
                MenuItem { text: "Option 2";}
                MenuItem { text: "Option 3";}
            }
        }
    }

    MouseArea {
        anchors.fill: parent
        acceptedButtons: Qt.LeftButton | Qt.RightButton
        onClicked: contextMenu.popup()
        onPressAndHold: {
            if (mouse.source === Qt.MouseEventNotSynthesized)
                contextMenu.popup()
        }
    }
}

2) Right click or left click to open Menus in app
3) Start clicking the Menus in following order:
-Menu 2
-Menu 2.1
-Menu 2.2
-Menu 3 (From Menu 2.2, slowly place the cursor to the boarder of shown Sub menu and Menu 3 and when slightly on Menu 3 side, click to display Menu 3.1 and Menu 3.2

If done carefully enough Menu 2 is highlighted while Menu 3 is actually opened which is not expected behavior. This could alternatively be reproduced accidentally when clicking randomly the menus but likely it is a lot harder to reproduce issue that way.

Issue might not be reproduced on a first try, so keep clicking those menus in the order described above until this happens.

Please find attached an image which shows the issue.