Quantum broke Last Pass binary features. It's still not repaired and as a premium paying customer have spent hours wasting time with with incorrect solutions from their atrocious support trying to get answers. Was told to use Chrome. Told them I have used FF for over 10yrs for good reason and not about to change. Requested a refund, was told 9mths in, no refund. And I have trusted them with my passords! https://lastpass.com/support.php?cmd=showfaq&id=826
Currently back to desktop password manager, while I consider using Firefox's inbuilt password manager.