Hi I also just wanted to add my voice to this - I've been looking through the closed threads on this site and can see there is some resistance to bringing this because of low user demand. I've signed up for your community website just for this issue.
I've been using 1password for a few years and do spend a lot of time struggling with duplicate entries. When signing up for an account, at checkout pages, there seems to be a tendency towards 2-page signups - the 1st collects an email/username and then the second the password. When I go through these I always seem to end up with 2 entries in 1 password 1 with the username and 1 with the generated password each with different URLs in the same domain.
I also frequently hit a problem where suggested passwords are not an option and trying to solve this usually ends up with a separate entry in 1 password with the generated password on it.
Honestly, I'm not sure if the cause glitches in the tool or plain old user error. I don't expect 1passoword to always be able to prevent duplicate creation and support every single website and app in the world, but I would appreciate some kind of tool support to help clean it up.
It is pretty frustrating.
