Hello Humpty!
On single click on the active tab the previous in history will open. This is perfectly fine.
But can you please suppress this on double click? It does not play nicely with other extensions like tabloc https://addons.mozilla.org/de/firefox/addon/12536 which e.g. tries to protect the current tab from closing.
Thank you
private_lock
Hmm, yeah, interesting dilemma. Guess I could add on option to delay for a double-click to occur.