I have found a different issue concerning the larger editor in the Console tab.
I can not type in it, nor can I change to any other tabs (HTNL, CSS, Script, Net, etc ...)
If I collapse to the single row command line, then I can type in it, and also the tabs change again as expected.
This happened when updating Firefox to 33.0a1 nightly.
I have disabled two Firebug addons that I was using (FireDiff 1.2.1 and CSS Usage 0.3.3), but I haven't had a chance to try a new profile yet
Setup:
FF: 33.0a1
FB: 2.0b8
OS: Ubuntu 12.04
Will post again when I get a chance to see what happens in clean profile.
Thanks,
d