Wheel Event direction changing when pressing Alt key

brai

When I use the onWheel event in a MouseArea, I get the wheel.angleDelta.y to represent my scrolling delta as expected.

When I press the alt key while scrolling, it will change the direction of the scroll from vertical to horizontal.

I.E. when the alt key is pressed, the wheel.angleDelta.x value is non-zero, and the y value is zero.

Here is the mouse area code:

MouseArea {
    id: translateArea
    anchors.fill: parent
    cursorShape: Qt.SizeAllCursor
    acceptedButtons: Qt.LeftButton

    onWheel: {
        console.log(wheel.angleDelta) // Using this to debug for now
    }

    drag: {
        target: image // Mouse Area is in an image
        axis: Drag.XAndYAxis
        maximumX: image.paintedWidth
        maximumY: image.paintedHeight
        smoothed: true
        onActiveChanged: {
             if(!translateArea.drag.active) {
                 imgTranslateX += image.x
                 imgTranslateY += image.y
                 image.x = 0
                 image.y = 0
             }
        }
    }
}

I added the drag code, just in case there is an effect here that I am unaware of, but the documentation doesn't mention anything about conflicts.

I can work around this (when alt key is pressed, look for x value instead ...) but this just doesn't seem correct?

I am running Qt 5.15.0, QtQuick 2.15, and am running the application on Windows 10, MSVC 2019 64bit.