Right now what I'm doing is focusing on the "fonts" and "text" tabs and then shift-tab'ing twice, which puts the focus on the apply button. Then hit space.
I also tried docking the dialog, and that adds a scrollbar so it works, but then again I hate docked dialogs.

So, anyone has any other way to work with this?
It's Win7 by the way, in case the UI widget set makes any difference.