I tried the workaround, setting it to fullscreen and maximizing, and it didn't work. Setting the resolution to 1920x1200 has no effect, and the res won't stick, it falls back to either the one above or the one below.
I like windowed mode; I even have it set so Dominions launches with a big window so I can have my 1600x1080 native resolution - and also have my IRC window open.