Fairly buggy on Firefox under Ubuntu Linux. It seems to work better on Windows 10, OSX (both Firefox) and Android though.
Main issue I have is the pop up when clicking on icon doesn't stay open. I have to right click and sign in from webpage, which is an ok workaround. From there, the pop up seems to stay open and work fine. As long as you're aware of this workaround you should be ok.
Earlier issues I've had with Ebay login seems to be fixed and working now.

Como muchas cosas del universo LastPass, se queda a la mitad, teniendo unas grandes posibilidades... Funciona bastante bien, el baúl es útil y la generación de contraseñas también. No obstante, su funcionamiento y a nivel estético no estan del todo pulidos. Hace falta seguir depurando la app y extensiones...

Very good Single Sign On applications. A point of improvement would be automatic login without asking as an option

Aardig handig, maar noteer de inloggegevens!

Penso che sia molto sicuro e facile da usare

Need more experience using product--seems good so far

This extension is great. It works across all my plaforms ( Windows, Liunx, andriod cell phone).

I have used lastpass for several years now. It is easy to use. I dont have issues but i do know sites try to gt you to update your passwords. So suddenly your pass. Don't work. Passwords can be updated from the lastpass home. This a great app. Using a finger print would be the only thing easier!

Upd 01.2020: В последних обновлениях убрали русский язык с приложения, "в попытках улучшения качества перевода". Писал им на почту, оставили без внимания. Русский язык считается как аналог английского для граждан СНГ, поэтому -1 звездочка