jessie: Firefox download dialog unusable

[Felix Natter <fnatter@gmx.net>]

hi,

I get an unusable download dialog in firefox (iceweasel) of current
jessie (updated this morning):
  http://www2.inf.fh-brs.de/~fnatte2s/firefox-empty-buttons2.png

Clicking on the half-displayed buttons is a no-op.

I can reproduce it by clicking on "woodstox-core-src-V.tar.gz" on
http://wiki.fasterxml.com/WoodstoxDownload (see screenshot above).

Freeciv-gtk[23] work fine (also gtk intensive applications).

--> Shall I report this as a (RC?) bug against iceweasel?
(I couldn't find anything related here:
https://bugs.debian.org/cgi-bin/pkgreport.cgi?src=iceweasel)

Any help is much appreciated!!

Best Regards,
-- 
Felix Natter