Sorry for the generic title of this thread: the problem is difficult to summarise in a short title.
Twice in the last two days when I have been command-tabbing between the forum and the main 1Password 7 app the app has "disappeared". That is to say, although the icon is in the dock there is nothing I can do to get back to the main app. Command-tab to the app icon does nothing, clicking on the dock icon does nothing, trying to run 1Password 7 does nothing. Nothing at all will redisplay the main app. Neither do the ⌘\ and ⌥⌘\ commands display the 1Password 7 mini. I am at that stage completely stuck and all I can do is to kill the 1Password 7 processes in Activity Monitor and relaunch 1Password.
1Password Version: 7.0.4
Extension Version: 18.104.22.168
OS Version: 10.13.5
Sync Type: WLAN