Fortiview layout broken in firefox (tabs seem to big)

On the default zoom level I am seeing this in firefox when choosing the 'domain' tab. It just looks really bad, I'm on 5.2.7 but I'll upgrade to 5.2.9 later today.

Does it still happen? I'm frustrated by the quality of FAZ series, it really isn't something anyone ouf the IT dept is capable of use :(