[MlMt] Did something happen to the pop-ups under the Subject line in the compose window?

[Seebs]

I recently noticed that all of these are now blank. They still work, I 
can still select things, but they look blank. (The pop-ups for things 
like sending identity, listing attachments, and so on.)

Only thing I can think of is that I was recently messing with system 
font preferences, and it's possible that I've changed the default font 
sizes -- and if you have fixed-size objects holding things in a 
system-default font, that could break it.

-s