http://bugs.winehq.org/show_bug.cgi?id=12520
--- Comment #2 from Dan Bugglin megazzt@gmail.com 2008-04-14 10:01:59 --- Now that I think about it, I only tried resizing when using gutsy/kde35 with compiz-fusion. I tried to use the winecfg setting to disable using the window manager which didn't fix the small window problem, but I forgot to try and resize the window then.
I'll try that later, as I'm not in Linux ATM, but even if it works this is still a bug... just a workaround-able one.