After launch, the icon is updated from one to another - this can be seen on the gif, which is located here:
And this happens for many logins.
For clarity, I will show you which site addresses are filled in the card of one login:
Please correct or explain the logic of replacing from one icon to another after opening the application
1Password Version: 7.3.684
Extension Version: Not Provided
OS Version: Windows 10 Pro 1809
Sync Type: Not Provided