In the dialog when I press alt-tab, as long as alt is pressed, the border of the current application (firefox in the example above) is marked. When I release the alt key the focus returns to the dialog. The result is that pressing alt-tab does nothing.
In the dialog when I press alt-tab, as long as alt is pressed, the border of the current application (firefox in the example above) is marked. When I release the alt key the focus returns to the dialog. The result is that pressing alt-tab does nothing.