[Camino] Google Spreadsheet don't work with currently nightly builds (?)

I'm currently using the nightly builds and I downloaded the current 
one from 
http://ftp.mozilla.org/pub/mozilla.org/camino/nightly/latest-trunk/Camino.dmg

Even with this release Google Spreadsheets are "broken" - the main 
editing area is shown in black; although data can be entered it 
cannot be seen.

I tried the last "release" 1.0.3 and here it works.

Shall I file a bug? Searching for google or spreadsheet didn't turn 
up any results in bugzilla. I don't have a second machine at hand to 
cross confirm it, so if someone else does I can file the bug. If this 
is really broken it needs to be fixed, soon. Perhaps the bug is in 
Gecko?

mg