The ComboBox's scrollbar seems to get messed up in Firefox on the Mac (this is NOT a problem on the PC). I am going to guess that this is particular to my situation, as I can't find any other posts about this - either that or I am the only Mac Firefox user out there!
I am simply rendering the ComboBox dynamically (i.e., it is autoCreating the HTML) into a Toolbar, which is added to the header panel of a grid.
The issue is that the scrollbar is more or less invisible in Firefox, unless I click in the area where the scroll bar should be, in which case it becomes visible - but as soon as I mouseout or click again, it disappears again. Using the scroll wheel, incidentally, scrolls the content and shows the scrollbar (again, until I mouseover/mouseout or click, in which case it again disappears).
Thanks for any help!