I opened a thread on stackoverflow describing the problem in general;
http://stackoverflow.com/questions/6432925/is-the-firebug-chromedevtools-console-group-indentation-wrong
Thought it would be a good idea to also post here, since yeah.. all
the smart-brains behind the devtools are here :)
in short;
using console.group directly after a console.group without doing a
console.log before the two console.groupEnd's will result in wrong
indentation/capsuling from then on. Adding a console.log between the
two groupEnds or group statements makes the indentation work as
expected.
Please view DummyCode for reproduction on stackoverflow.