It was a minor and infrequent inconvenience. In those cases, there is a 'password history' feature that is fairly easily accessed in cases where the password change page requires the original password on the change form. Overall there were only a small number of instances where I had to go back and re-attempt a failed password change due to password requirement violations. The pop up is not movable so it does on occasion obscure password requirements on the underlying page, preventing verification whether fine-tuning of the auto-generated password is necessary or not. There are some UI refinements that could improve, such as the modal pop-up 'save password' window in 1P preventing full viewing or access to the underlying webpage. I needed to adjust from the LastPass 'Post-Save' workflow as well but ultimately I prefer the 1Password method of saving. I needed to change over 700 passwords and got a lot of practice with the 'save password' interface and function. I was a LastPass user for 9+ years and switched to 1P after the LP December breach announcement.

Dashlane login page