Yesterday, I put my MBP to sleep while it was in clamshell mode attached to an external monitor. I then unplugged it, brought it into another room, and opened it up. Presumably 1Password Mini had been open - I got a purple window outline with the 1Password mini window overlapping it, and a message:
All specified constraints visualized.
Layout is ambiguous (followed by an Exercise Ambiguity button)
Click a constraint to log it to the console
I wasn't able to get the window to close or go away without restarting.
You can see a screenshot here:
1Password Version: 1Password 7 Version 7.3.BETA-12 (70300012) AgileBi
Extension Version: not involved
OS Version: OX X 10.14.4
Sync Type: Dropbox