Board Thread:Support Requests - Getting Technical/@comment-20013000-20140908085042/@comment-452-20140915140931

Wikia Staff have replied to my support ticket asking what the minimum width should be, and they have confirmed that it should be 768px.

edit: I have more great news!

Wikia Staff have confirmed that ThemeDesigner not working at 800px is a known issue which has had some recently progess towards fixing.

They thanked me for my report, and are checking that the open ticket regarding the issue is up to date with the additional details I gave them.