Here are some of the multiple issues I have daily with the 1Password extension:
On the Mac it loads randomly (about 1 of 10 times). I have either the "waiting wheel" (see attached image) or just a button "open 1Password" you can click multiple times without any result.
It also doesn't show up automatically in the login entry fields (except if you have previously managed to activate it in the extension bar), and when the 1Password button appears in the field, clicking on it works randomly.
The situation is worse when 1Password is not already logged in on the Mac. Clicking on the extension button doesn't always trigger the 1Password login.
This situation is so annoying that it completely ruins the experience with the browser

The expected behaviour is what the 1Password extension is supposed to do in its description: showing up in fields, available and able to login to the 1Password vault.
Version 1.0.3 (142), WebKit 624.1.2.19.2
Tahoe (26)
26