I believe i may have a work around for this problem. With the update to LastPass 4.133 a popup occurred asking for data permissions. It was late at night and I must have declined. Since then, the LastPass icon has been missing from the menu bar. No amount of reloading of LastPass or updates to FireFox have fixed this. Apparently LastPass are investigating.
Tonight, in the add-ins manager in Firefox I selected "Run in Private Windows" and the LastPass Icon re-appeared and so did the permissions popup. I selected "only necessary" and Accepted. Now LastPass is working again.
However, if "Run In private Windows" is deselected the Icon disappears again.
Clearly this is a LastPass issue introduced in 4.133 and related to the permissions dropdown. There is no way of reversing the original selection so you end up with a non working LastPass
PLEASE FIX
@Henry Eduardo Ortiz,@Ash Cannon,@Karol Hidalgo