Great extension, thank you.

The main issue I have is when restoring a session (using a different extension), all the group and folder layouts are gone.

I use Tab Session Manager to manage my session as it automatically backs up the session every X minutes + on window close which is essential for my needs. Tree Tabs cannot do this except for manually exporting sessions which is inconvenient in daily use.

Perhaps there is a way to "play nice" with TSM, such as TT automatically saving a history of the group and folder layouts so when restoring my session with TSM, TT can re-group and re-folder what it remembers? The alternative would be to compete with what TSM already does very well and save sessions (I assume sessions also save group/folder layouts) every X minutes and on window close, thus replacing TSM in my case. For me, I prefer to use one group and split it using folders.

The other issue that I've noticed is that when moving a tab to a folder using TT after a TSM session restore, my pinned tabs had their order rearranged. I don't know if other tabs we also rearranged. Who's to blame, I don't know, but I thought to mention it anyway.

Lastly, I'd like to see a "Automatically collapse other trees on expand" option but for folders.

Thank you once again for a fine extension.