
The work around was to right-click on the extension to bring up a context menu, click on "lastpass", which opened the full vault in a new tab. However when I clicked on it to log back in - the animating safe appeared - and never disappeared (well - not within about 30 or 40 seconds, which was the longest my patience would last). Last pass's extension goes yellow to display a warning (not unusual either - annoying, because it doesn't really achieve anything, but not unusual). Problem is - my session timed out (nothing unusual). For example when you first sign in at the start of a new session.

In the latest version of the LastPass extension for firefox (as of today or yesterday I think) at various times a little animation of a safe gets displayed, with the wheel on the front twirling around.

Tl:dr - when a yellow warning is displayed in the Firefox LastPass extension, the new animated safe thing doesn't go away, so you can't dismiss the warning.
