Initializing visible value affects how setGeometry at Component.onCompleted changes window on screens with different DPI

Users have observed that QML windows receive an incorrect size when using the setGeometry function on the QtQuick window object.

Qt Support tested with:

Left primary screen 2560x1440 100% scale

Right secondary screen 3840x2160 200% scale

Empty default QtQuick template project with AA_EnableHighDpiScaling enabled.

Following code was added:

visible: false//or true

Button {
        text: "Fix the size"
        onClicked: {
            var rect = Qt.rect(2560+100, 100, 200, 200)
            root.setGeometry(rect)
            console.log("width",root.width," height",root.height)
        }
    }

    Component.onCompleted: {
        //2560 to first screen resolution at Qt support
        var rect = Qt.rect(2560 + 100, 100, 200, 200)
        root.setGeometry(rect)
        root.visible = true
        console.log("width",root.width," height",root.height)
    }

Depending on initializing visible value 5.12.4 and 5.12.6 gave different width/height values on Component.onCompleted root.setGeometry(1stwindow.w+100,100,200,200):

false, Qt 5.12.4: Size same

false, Qt 5.12.6: half size

true, Qt 5.12.4: 4x size

true, Qt 5.12.6: 2x size

With the button press the window was set to the 200% screen with given width and height but the scale of the title bar is equal of 100% scaling.

Example project attached.