Dev, please figure out what is wrong with your add on. Since Firefox updated my tabs vanished and appear to have been replaced by a sidebar added to Firefox that performs a similar function but not as well as OneTab did.

Perhaps OneTab being in the same location as the sidebar Firefox added is the cause of conflict? Auto Tab discard is functional and it does not use this same area. Tab Session Manager also works fine so that was the only logic I could think of. I love using this add-on and hope you'll take time to sort this out as it was the reason my computer RAM was being drained entirely and had been crashing out. I had to remove it to make that stop.

PLEASE fix, I'd love to use it again and I hate what Mozilla has done to replace it with their own sidebar. Can't you relocate this add on to the other side of the browser bar? Thanks for considering my request and I wish you the best of luck in this effort.