Android: hidden windows still visible and wrong stacking order with Qt Quick

1. Open the Qt Quick: Window and Screen example
2. Run it

Note that the Qt logo is still visible, even though the window is hidden.

3. Click on "Show"

The new window is shown behind the control window, but it is not possible to click on the control window. If you modify the example, you can see that all the mouse events go to the new window.

4. Press the back button

Now the new window is hidden, and the control window responds to clicks again.