Worked great for years, the current version is broken on Firefox and Chrome. As many others have reported, it does not find any matching sites in the vault. You have to manually open the vault (which is also slower now) and find your site.

Update: To fix this disable the "improved save and fill" feature. It eventually worked for me, not sure if it was a restart that did it.
https://support.lastpass.com/help/how-do-i-enable-the-improved-save-and-fill

I've been using LastPass for years now, and until recently it has worked well. However, now it logs me out constantly, even though I have those settings unchecked. When I try to contact Support about it I just get redirected to their Online Community Support forum, and no one there can help. I still don't know why this is happening. Every time I want to log into one of my sites now I have to log in to LastPass first. PITA!

Used to be great, but the current version won't find anything stored in the vault. Opening the vault leads to a page where you see your stored credentials, but can't open their properties. Sad to see, that the LastPass Browser-Extension has become pretty useless.

Keeps forgetting the 30 day login, and became a real pain lately

It used to be great but since the recent major UI update it has become extremely unresponsive and horrible to use.