Viewing that URL, with a browser [CentOS 6 Firefox] which is
reported by Gimp as yielding a screenshot image of 1360x769,
there is a pretty obvious ( CSS <?>) layout infringement problem.
Okay, there is currently a CSS rewrite in the works to update to
Boostrap3, I'll check if the error is still there at that resolution.
Thanks for reporting.
Aurélien