No closing 'X'... Rated 4 out of 5 stars

I too love this addon but since FF29, there is no 'X' on the tabs to close them. I have to Cntrl-W. Tried uninstalling and re-installing luck. Is this a FF issue or a TST issue? (FF29 on Linux)

This review is for a previous version of the add-on (0.14.2014020901.1-signed).