Mobile Version on Firefox

I'm working on a site and it appears that the mobile version of the site is coming up in firefox but other browsers are showing fine. I tried to reinstall the mobilejoomla but no change.

Any insight on this issue?

any help on this?

Do you use ?device=xhtml or template previews to test mobile version? Note that after first switch to mobile version MJ saves this info in cookies and you should switch back using ?device=desktop URL suffix.