Правила прокси для контейнеров не работают.
А главное - когда включено скрытие вкладок неактивных панелей, при переключении панелей с сотнями вкладок потребление оперативной памяти нарастает безлимитно , пока браузер ( а то и вся система ) не падает из-за недостатка памяти и подкачки

Easily the best vertical tab manager. Nested tabs, tab re-titling, automatic tab sleeping, tab groups, settings syncing between devices, the list goes on. This almost single-handedly makes Firefox my go-to browser. Keep up the amazing work!

Please implement

Automatic groups, for example by domain

To close tabs when selecting multiple

Ability to place a new tab button in the top bar

And show an interactive animation line at the bottom of the tabs when loading

By far the most polished sidebar tabs extension. Make sure to use the userChrome.css dynamic hiding rules when installing it.

Excellent software like this is rare. The priceless value add it brings to my browsing experience aside, the ui, ux, performance, feature set, vision is excellent top to bottom. Someone needs to award this guy.

Best thing since sliced bread. I had been using a similar add on for years until recently, Sidebery does everything that it did plus lots more really useful things. Really helps my workflow. Excellent.

Flexible, cool customization, and yes, I only recently realized the niceties of saving/restoring the panel to bookmarks. Author, you're really good, thanks!

p.s. Why autosnapshots don't save cached tabs?

Haven't been using this plugin long but it seems excellent! Totally configurable and well put together.