Comment 5 for bug 484663

I believe I have this issue too.

When a window such as pidgin has a notification event, it tints the gnome-panel listing blue. But, as soon as I mouse-over the window in gnome-panel sidebar (vertically oriented), the scaling of the @!#(*!@ buttons instantly changes to a double-row. If I then mouse-over the button again (completely illegible now because it's too narrow), the buttons are re-scaled back into a single row!

This makes gnome-panel unusable. Most of the time, a single-click of a window in gnome-panel merely results in nothing happening. Every tenth single click or so, the window maximizes.