This affects 16.04 as well, at least on a dual-monitor setup. Closing all windows on the affected monitor seems to fix the problem, but then if you alt-tab to a window on another monitor the switcher seems to again get behind all windows.
This affects 16.04 as well, at least on a dual-monitor setup. Closing all windows on the affected monitor seems to fix the problem, but then if you alt-tab to a window on another monitor the switcher seems to again get behind all windows.