Firefox does not provide the same experience as Explorer.
Hi Shawn,
your picture is too small and not available in original resolution, so it's hard to guess what exactly is wrong.
But as far I can deduce, this is more problem of Firefox itself I guess, because I have seen the same behaviour (cause probably not correctly and fully loaded css files) on more different webs. Usually to force cache reload (Ctrl+F5) helps.
With regards,
Jan
Bentley Accredited Developer: iTwin Platform - AssociateLabyrinth Technology | dev.notes() | cad.point