Rated 4 out of 5 stars

Works quite nicely. Though the popup window aksing for the master password does appear for an instance each and every single time you visit a website where you've saved a password. Only 4/5 because of this issue

This review is for a previous version of the add-on (1.21.2.1-signed). 

Unless you set timeout to a very short time, this should not happen.
If you feel it's a bug, please submit it with more details on how to reproduce it at the support site or via email.
Thank you.