I've noticed for quite a while now in ZC, that text breaks through various boundaries, on fields in ZC. Like for example if you use an alternate music file with a really long name (e.g. 'Nightwish - Daek chest of wonders' (yes, I know the filename is badly typoed, so sue me)) in a dmap, the text 'breaks through' the edge of the field, spilling out into the empty space in the dialog. I'm running "zquest-w.exe -windowed -scale 2" in case you are wondering.
I've seen this pop up in other places too, but none that I can recall immediatly. Bet you wouldn't have to look long, though. And I'm sure I'm not the only person whose seen it... it's possibly even common knowledge by now. But I figured I'd at least report it.