When I copy a username in the 1P app, switch to another app (don't have to paste, just switching does it), and then switch back to the app there is a message that "password copied!". This happens reproducibly. The paste is actually fine (username pasted). Also, if I try to then copy the password while this message is still on screen the focus seems a little wonky. Once the message disappears (times out I guess) everything is fine.
1Password Version: 7.0.6
Extension Version: Not Provided
OS Version: iOS 11.3
Sync Type: Not Provided