Great addon, but not sure why the Plain Dark theme was removed, was a perfect match for my dark browser theme. Had to revert to an older version.

loved it until the 7/30 update, background is now stretched & pixelated

Absolutely love this extension, however it says I can't add it to firefox because it's corrupt. Any suggestions?

A complete overhaul about tab controlling... It becomes one of the reasons that motivating me to keep using Firefox today (with no exaggeration :P

(Fixed, with extreme swiftness. More congratulations)
Piro, the savior of Firefox. Many, many thanks.
But I think version 3.5.7 broke TST Hoverswitch, equally fundamental for me.

One of the best things that happened to FireFox (IMO).
There are few quirks but I circumvented them by disabling cache, drag of tree tabs to another window and most important by shutting down TST sidebar before closing browser (that last part prevents from "mangling" order of tabs inside tree at launch).
Thanks to that I can safely manage 2000+ tabs on small Atom based CPU.

This has all the potential of being a great extension. Unfortunately, after bookmarking a carefully structured set of trees, on reloading them, the tree structure is completely scrambled, resulting in lots of wasted time having to rearrange it all over again. More of a hindrance than a help, in the end.