Running the following QML snippet and hovering a tablet stylus over the window

---------------------
import QtQuick

Window {
    id: root
    visible: true

    HoverHandler {
        id: hovHandler
        cursorShape: Qt.PointingHandCursor
        acceptedDevices: PointerDevice.Stylus
    }

    Rectangle {
        color: hovHandler.hovered ? "teal" : "white"
        anchors.fill: parent
    }
}
---------------------

Running it Wayland-native there is only the fallback crosshair cursor (a bug, but not what this report is about)
Running it in a X11 session it shows the pointing hand cursor as expected.

Running it on Plasma Wayland forced to XWayland: It can show a variety of cursor shapes. Hovering in and out of the window sometimes switches the shape. I've seen: New-breeze arrow cursor, old-breeze arrow cursor, I-beam cursor, new-Breeze pointing hand, old-breeze pointing hand

On Gnome Wayland-native: No cursor at all (a separate bug)
On Gnome XWayland: As expected on X11