I might add: while this behaviour is due, the expose function also won't work. When clicking on a launcher with two (or more) active windows, all windows appear instead of triggering expose. The second time, however, expose triggers as normal, the panel will stay visible (and unfolds bottom -stacked- icons) and the buggy behaviour ends.
Maybe related: It seems that while switching trough windows, at random interval, the launcher immediately disappears and won't appear unless you hover the Ubuntu icon in the top panel.
I might add: while this behaviour is due, the expose function also won't work. When clicking on a launcher with two (or more) active windows, all windows appear instead of triggering expose. The second time, however, expose triggers as normal, the panel will stay visible (and unfolds bottom -stacked- icons) and the buggy behaviour ends.
Maybe related: It seems that while switching trough windows, at random interval, the launcher immediately disappears and won't appear unless you hover the Ubuntu icon in the top panel.