Nope, they're both empty (er, both = include and exclude)
Actually, no I'm not sure. That's what makes this so bloody irritating!
(you missed 'Options' ) Restore Windows and tabs from last time - oh, definitely! I normally have 3 - 4 tab groups available; 3 pinned tabs and 4 - 8 tabs (depending on the group)
While I do have several WebDev addons loaded this is sporadic enough that I don't think it's any of them. This seems to occur after running CCleaner but not every time. And I can't find a consistent anything to 'peg' it to!
While I just:
Booted Computer
Loaded Firefox (tabs in place)
Ran ccleaner (got rid of the old InsiderPreview, etc)
closed Firefox
loaded firefox - all copasetic
closed firefox
ran ccleaner - didn't find much
opened Firefox - all fine
closed firefox
ran ccleaner - registery (and of course after an insiderPreview update last night, it found a lot, mostly video card stuff and Framework V1)
reran ccleaner registry - registry and found a few more Framework Vi entries.
loaded Firefox and everything is fine. I have no tab groups, they went away a while back and I haven't done anything to need them - I will create a tab group later today when I do some genealogy - probably.
If I've done something wrong there, give me some ideas.
This is what makes this exercise so blasted frustrating. They only seem to disappear after I've used ccleaner - but not all the time. I'm game for any comments / suggestions since it's obviously something that I cannot replicate consistently - but I wish that whatever it is (and I think it's ccleaner) would leave my tabs / tabgroups alone