In diagnostics mode i tried the "reset tree" button, what I only expected to redraw it with all of its content and not (as I now expected it did) with the actually open tabs and windows. That's how I lost my last sessions and a group of hibernated tabs (what was actually called "hibernated Tabs").
Is it all really deleted or just not displayed anymore?
Is there any way to bring it back?
Thank you very, very much!
Customer support service by UserEcho