When I woke up this morning and got on my Windows 10 system, I noticed 1Password was left open but minimized.
I went ahead and clicked the task bar to expand it so I could close it, only to find the app was completely unlocked.
I specifically unlocked, used & minimized it last night, several hours before this...
The computer sat idle for somewhere between 7 to 8 hours.
I went into settings & verified auto lock was enabled and set to 10 minutes...
1Password version is 7.3.684...
I don't know my exact Windows 10 version off hand (I can check when I get home) but its as up to date as it can be sans 1903 (windows update indicates 1903 will be automatically installed once a known issue is fixed by Microsoft).
1Password Version: 7.3.684
Extension Version: Not Provided
OS Version: Windows 10
Sync Type: Not Provided