It's a mess. When you restore session, it DOES NOT restore the session, but ADDS windows and tabs to the currently open ones.

Suppose you have 10 windows and saved the session. Then later on you navigated to some other URLs. Now you want to restore the saved session. But after you click on restore, current windows will NOT be closed, but new windows will be added. Now instead of 10 windows you have 20. If you activated autosave and restore a newer version later on, you will have 40 windows, then 80, then 160, etc. Each windows will be duplicated 4, 8, 16 times etc.

I don't see any option to disable this awkward mode.

Having this awkward mode makes the extension unusable.

Since some weeks ago, it's not saving on browser exit. Still a good manager.

Works great except that it constantly updates, then announces its update all over my browser (opening tabs and all this stuff). What's worse, it needs to confirm permissions after every update, or the sync stops working. But it doesn't ask to confirm permissions, so the sync just stops working! Extension developers need to make some effort to understand how these things work, and should also be using their own extensions so they learn what goes wrong all day every day in the user's browser.

Very useful when you have so many tabs to save and open. I've read a review where they said that this extension doesn't work with multi-account containers but in my case, it works with it. When I restore tabs or open a session, the containers are working.

Cloud sync is useless. Neither saves sessions to Google Drive nor syncs with other computers.

Solo desearía que su ícono fuese más lindo, así se vería mejor, ya que lo tengo colocado en la barra de herramientas permanentemente

How do I save sessions (permanently) or sort of favorite them so that I can open the groups of tabs later on? Can we replicate Simple Tab Groups functionality with Tab Session Manager ? Thanks.

Very good addon!
Does only save the active page for each tab. Having an option to save each tab history will be great, but it seems that it is due to a limitation of Firefox's API.