Apologies if I get this wrong - it's my first attempt at a bug report!
A new browser tab opens every few seconds and a notification pops up too. It's a real struggle to authenticate because of this - I have to keep trying to quickly go back to the tab where I've started to authenticate and get the Duo push all done. By the time I've done this I normally have to close between 5 and 15 browser tabs.
Version 7.7.BETA-4 (70700004)
Think it's the same Chrome / Firefox / Brave / Edge.
Not sure if I've seen it in Safari.
1Password Version: 7.7.BETA-4 (70700004)
Extension Version: 1.21.2
OS Version: MacOS 10.15.6
Sync Type: 1Password Teams