Ditto, Hirak99. Same OS, same Firefox, same problem. Thanks for the heads up on the fix. Though, in my case, 'browser.sessionstore.max_tabs_undo' was set to '0'.
Seems like some extensions might be messing with the 'browser.sessionstore' settings.
Ditto, Hirak99. Same OS, same Firefox, same problem. Thanks for the heads up on the fix. Though, in my case, 'browser. sessionstore. max_tabs_ undo' was set to '0'.
Seems like some extensions might be messing with the 'browser. sessionstore' settings.