Hi, just started trying out 1Password X, and am impressed! Kudos!
I'm using the Vivaldi browser (1.13.1008.32) (which is Chromium-based), and as far as I can tell, everything works as expected using the extension button pop-up.
What isn't working is the 1P button that is inserted in login fields on webpages. My mouse pointer changes to a hand when I hover over it, which suggests it's being recognized as a button, but clicking on it has no effect. I've disabled all other extensions and tried different websites (including Evernote as suggested in this thread: https://discussions.agilebits.com/discussion/84096/clicking-use-suggested-password-and-save-password-dont-do-anything-remove-screen-shader), but still see the issue.
1Password Version: Not Provided
Extension Version: 1PX 1.2.0
OS Version: Windows 7 SP1
Sync Type: Not Provided