Issue with alignment in firefox

Ive have come across a slight issue when using ultimate tables in Firefox.

When you have search enabled it appears the search box overlaps with the 3rd and 4th column of my table. I have checked with Chrome and IE and the issue is not present. I have also disable a couple of other features of my website which I have seen cause small alignment issues with other plugins and it has made no difference.
I have only been able to test this on the most current version of Firefox (Version 21.0) but I have other members of my community report the same issue on firefox only for them.

I am currently running a development site so this is not a major issue, more a cosmetic issue but I would very much like a fix.

You can view the development site here:
http://dev.thejackdames.co.uk/playlist

Please note that some of the permalinks in the development site redirect to my live site so if you get a 404 that is likely the issue.

Best Regards

Kev Stevenson
The Jack Dames

http://wordpress.org/extend/plugins/ultimate-tables/