My tabs automatically duplicated and I can't do anything include closing them.
I open some tabs and group them in separate groups. Some tabs in one group automatically duplicate in that group or other groups. I can't do anything with those tabs including closing them. I just can restart Firefox and they disappear, but in a while, the problem happen again. Please help me with this problem. Thank you.
Wšykne wótegrona (1)
Firefox may have had a problem and tries to restore a session from sessionstore.bak
Delete sessionstore.bak in the Profile Folder
If you see files sessionstore-##.js with a number in the left part of the name like sessionstore-1.js then delete those as well.
See: