I'm used to using Go & Fill in Safari w/1Password (Cmd-Opt-\). Starting with 7.7.BETA-0, when I do this, a new tab opens in Safari with the same page as the tab that was currently in the foreground.
For example, if I currently have www.google.com as the foreground tab, do Cmd-Opt-\, select a login, hit Return, Safari opens a second tab with www.google.com.
1Password Version: 7.7.BETA-1
Extension Version: 7.7.BETA-1
OS Version: MacOS 10.15.5
Sync Type: WLAN