Back on F21 - Xfce 4.10.1 (though might have been an earler version at install), the ALt-tab icons just showed nice, small app icons. But on my new F22 - Xfce 4.12.0 setup, Alt-tab is showing the app window at a much larger size. How do I switch this to the earlier behaviour? I don't see it in 'Windows Manager Tweaks' Cycling. thanks