I just wanted to share my experience in the hope a) somebody else is having the same issue and b) that somebody might be able to provide an answer to how to fix this.
I'm using Vivaldi as my browser (although this happened in Chrome too as you'd expect) and when I update a password within a website, I get the popup from Enpass asking me if I want to save the update to an existing or new record. Great - I choose the relevant one, and away we go.
What I did notice though is that this is only updating my record around 50% of the time. I'm having to update, and then go and check in Enpass to make sure it has updated. Sometimes it does, others I have to manually update.
Has anybody else seen this, can replicate it, fixed it, or indeed knows whether it's related to a specific issue?