The recent update has massively improved the UI/UX of the extension which is great. Unfortunately it now often bugs out. Sometimes the extension stops showing logins for all sites, the vault stops working properly (buttons do nothing) and the only thing that seems to fix it is reinstalling. this has been going on intermittedly ever since the UI update a few months/weeks ago. Very unfortunate that QA is so lacking from lastpass.
EDIT: I reached out to lastpass support and they were able to help me resolve the issue. I have updated my rating to 4 stars because this issue should not occur in the first place.