[mstange]

Oh no, it's that box-shadow bug again :-(

We fixed in in Firefox 47, but the fix was deemed too risky to be uplifted to Firefox 46. That was probably a mistake. Anyway, Firefox 47 is going to be released in two weeks on June 7th. In the meantime you can remove the box-shadow from .widewrapper.main using the devtools, or you can use Firefox Beta (47) or Firefox Developer Edition (48), which you can get here: https://www.mozilla.org/en-US/firefox/channel/#developer

[__mp]

Great! Thank you for the info! I'll stay with the current version: I have a Chrome installation for exactly that purpose.