Update to latest version to fix problems Rated 5 out of 5 stars

I had the same overlapping tabs bug as well (in vertical tabs) after FF updated to 14.0.1, but the problem was fixed once i updated to the latest version of Tree Style Tabs (updated to 0.14.2012081101 from current stable 0.14.2012050301).

It's recommended to check if there is a new version waiting approval (you can find them in Version Information -> See complete version history)

This review is for a previous version of the add-on (0.14.2012050301.1-signed). 

Superb addon Rated 5 out of 5 stars

Superb addon (expecially with wide screen monitors)

Problem: Firefox 3.5 with Metal skin has styling problems when the tab bar is located on the left or right sides

This review is for a previous version of the add-on (0.7.2009062901).