I lost all my unpinned 30 tabs and could not restore it, when Adobe update opened a link by firefox, which was not running in the background.

I guess what I have experienced might be a special case of 'Restore previous sessions'. The actual situation was that after I rebooted my laptop, Adobe update jumped out indicating an update being finished successfully. After I clicked on the 'close' button of the Adobe window, it automatically started firefox and linked to its website. But I did not find the 'Restore previous sessions' page this time. Then I restarted firefox, this time there was a start page with 'Restore previous sessions'. However, sadly enough, it is only restored my pinned pages plus the Adobe website. Actually, I am using 'bookmark all tabs' from time to time to secure opened tabs, but this time I did not expect such an incident. I would suggest to improve the 'Restore previous sessions' with multiple time tags and appear in all cases including my reported case here, after updating firefox, crashes etc. I like firefox in most occasions, therefore believe and hope it becomes better and more robust. Thank you very much!