Rated 3 out of 5 stars

per Dee2 el jul. 6, 2015 ·

Doesn't want to fill in password at npr.org

This review is for a previous version of the add-on (2.9.1-signed). 

per Daniel Dawson (desenvolupador) a jul. 6, 2015 ·

Please look at the support forum at https://groups.google.com/forum/#!forum/ddawson-addonssupport
In short, SPE has never claimed to fill passwords. That's still left as the job of Firefox, as to do otherwise would turn SPE into a password manager, not a password *editor*. If Firefox doesn't do that properly, you'll need other solutions, one of which I suggest at aforementioned support site.

If you want to complain about this, please complain to Mozilla developers.