I reverted to an older version 4.9.1.1 and set my addons not to auto-update. I will not be renewing my lastpass premium membership if they don't start providing better addon support. Older versions can be found at https://addons.mozilla.org/en-US/firefox/addon/lastpass-password-manager/versions/

Lastpass has been going down hill since Logmein bought it. Lastpass has gotten worse with every Add-on.