So far, so good.

I just started using the add-on, but something that is painful is that I have to manually import one by one my accounts from built-in password manager. the importing function does not work currently on Firefox 57 or up (Firefox quantum), so, if you have a really big key chain, that's something to keep in mind.

I want to copy my password

Frustrating experience when reporting specific issues with website.Seems that Lastpass should pay us fro reporting issues since it can take them 3 months to actually admit that yes there is an issue with Firefox version of Lastpass. Firefox version of the extension takes second fiddle with respect to the Chrome version. Reason why I stopped being a premium user of Lastpass was due to the Firefox version of the extension seemingly having problem after problem and it takes forever for support to actually admit there was an issue.

Works but used to be much better. Not able to easily copy password anymore without going to Edit Site... This disrupts many tasks such as using stored password in separate apps, terminal sessions, etc.

I got LastPass for the multiplatform support and sync but I'm seriously looking for alternatives by the time my current premium subscription runs out because of the declining Firefox support. How weird is it that you need the binary component for many of the basic features (copy username/password) of the extension to work but this is not mentioned anywhere in the description on this very extension page? I've been sticking with LastPass through the Quantum update waiting patiently for things to get better and I just found out about this.

This add-on is not up to par with the Chrome version and even the Edge version in some areas. The biggest missing feature is click on "Show Matching Sites" -> rt. click on the desired user name and get a context menu and be able to Copy Password.

I'm a long time paid user of LastPass. It has progressively become worse and worse over time. Offline access simply doesn't work and there are significant delays between logging in and the extension responding. In the meantime all that shows is a small unresponsive bubble, while CPU use shoots up. The Android app works maybe half the time for in-app logins. Disappointing.

Used to be really great, but lost a lot of functionality with the Quantum update.

Features such as Copy Username/Copy Password are missing and a lot of minor frustrating details such as the search bar not being highlighted when clicking the lastpass icon (you have to tab twice to get to it) or that you have to input your password twice in a row if not already logged in (didn't have to do this with the old plugin).

This coupled with the fact that it has become highly unreliable in saving passwords that it generates (I've resorted to copy/paste and opening sites in my vault to replace passwords).

It has just gone from a really smooth experience to being as cumbersome as having a standalone desktop application, which sometimes makes me wonder why I'm not using that instead :(

Works poorly on Firefox 57+: fails to auto-fill at least 40% of the time, and doesn't offer the option to copy username and password via context menu -- you have to manually open the vault entry in a new tab, un-blind the password, and copy-and-paste it over. This is very frustrating and I will unfortunately be sending me back to Chrome until this can be fixed for Firefox.

Used to work very well, but it's now more of a hinderance than a help. Am on Firefox 58 at work and it doesn't appear to work with any password that appear in pop up boxes (all work ones!) and doesn't remember the website when creating a log in on a new site etc.

There are so many workarounds I think it may be easier to go back to manually filling in the password myself.

You can't dismiss any notices this addon throws at you to actually get to its menu when you click the toolbar icon, and "never show me this again" doesn't work either. Poor port. Bit more effort?

The (lack of) responsiveness to fix this Firefox 57+ add-on is very bad.
I am considering to look for another password manager.

LastPass is significantly worse on Firefox (58.0.2) than Chrome, which is a real shame. The login dialog is usually too small to see the login form, though it has appeared correctly in the past. It's probably not a good security practice to enter your password into a form you can't actually see! Additionally, site search, when triggered by a hotkey, opens in a new tab, rather than in the dialog, which makes it a pretty big pain to actually use...

Please bring LastPass up to parity with Chrome for Firefox!

Doesn't have the same features as Google Chrome. I can't click the LastPass icon on the top bar to bring up a menu to copy a username or password.

I also cannot log into LastPass on Firefox for Android. Anytime I attempt to enter my two-factor authentication code, another tab opens up asking me to enter it again. This continues until LastPass locks my account for 5 minutes.

I've used LaspPass for years, however it no longer works properly since Firefox v57 (now v58); most specifically the Autofill function. Very disappointed. Similarly, the browser extension on Android doesn't seem to work either, and the App doesn't recognise Firefox most of the time.
I've seen many, many complaints about Firefox issues lately. Recently I saw something about LastPass no longer providing support for Firefox? If this is true, I may have to migrate to another password manager.

Very disappointing that it doesn't have feature parity with the Chrome extension.
"Copy Username" and "Copy Password" are the features I miss the most.

Not working with Firefox 58

The new version (since firefox 57) has lots of problems. Missing features, signs out almost every time I close firefox (despite setting options to NOT sign out), will not autofill many login pages, but maybe the biggest is that it uses TONS of memory, slowing everything else down. I was just testing it with about 15 tabs open and lastpass disabled - when I would enable the lastpass add-on my memory usage would jump by well over a gig!

Při každém puštění prohlížeče se musím do LastPass znovu přihlásit, nepamatuje si údaje jak tomu je ve verzi pro prohlížeč Opera. Jakmile bude opraveno, upravím počet hvězdiček.

Love the LastPass service, but it uses a huge amount of memory. Almost 4 GB on Firefox. Seems there is a problem with it that is not being addressed.

Doesn't have 'copy password' option. Have to edit, show password and copy. From a password storage and protection app!

When LastPass updates this extension to work as it does in Chrome and EVEN in MS Edge, I will give it 5 stars! Love the app, and want to be able to use it in Firefox, but there are serious usability issues:

Won't fill some banking sites info
Cursor doesn't automatically go to password when i click the LP icon.
Cursor doesn't automatically go to search box when i need to search within the Extension
No Copy Password link for each username
Have to manually copy/paste all pws for some secure/banking sites

These were all problems in MS Edge for a while, then there was an update.

Mozilla, please update this app!! We want LastPass and Firefox working together.