Tabs only open in a new window. Ctl T opens a new window NOT a new tab help-last update this problem started 2 days ago. How do I set FF back to open tabs in 1 window? There is no plus sign and going into optins and changing settings has not worked. I have uninstall FF and reinstall-keeping my personalization-and that was no help. Right clicking on FF Icon to open a new tab, or going up to FF drop down tab and clicking on new tab both do not work. Help everything opens a new window not a new tab. there seems to be no way to reset this or to chose a different optin. I just downloaded new tabs at end addon and it didn't do a thing.