http://bugs.winehq.org/show_bug.cgi?id=15229
--- Comment #59 from Susan Cragin susancragin@earthlink.net 2009-07-24 17:15:57 --- Actually, there is an easy workaround that I have just been informed of.
sh winetricks gdiplus fontfix
It works perfectly using that. I wasn't aware of the fontfix part, so it hadn't worked for me. Without that, the buttons do not draw correctly, or at all.