I have "Open previous windows and tabs" checked in the settings, And have been using firefox in that manner for years, Like I would close the browser, And would beable to come back to what I was working on. But after an update, I came back to all my tabs gone, And I opened multiple tabs and closed, And opened the browser again and there were no more tabs. I followed the instructions in a earlier post of the same problem but problem persists. https://support.mozilla.org/en-US/questions/1429964 Please help I lose productivity without this feature. Thank you, Paul