what are the rules pertaining to being able to restore a Firefox session on a mac?
For example, I had over 20 tabs open and quite firefox and usually in the latest versions of FF, when you restart, the icon on the page allows you to restore previous session.
If you dont select that icon and start browsing , do you then lose that ability to restore? I know in the History window it has Restore previous session, but it is now greyed out for me. What prevents a session from being restored?
Is there any way of retrieving a restored session?