I'm running 1Password 7.0.558 on Windows 7 and 10, and on both OSes, if I grab the scroll handle on the right side of the Mini window, the moment I release it, it launches a web browser window and tries to connect to the URL and auto-fill the username and password of the last-highlighted entry.
If I instead use the mouse scroll wheel or trackpad scroll gesture to traverse the Mini's window, the bug does not happen.
1Password Version: 7.0.558
Extension Version: Not Provided
OS Version: Windows 10
Sync Type: Teams