Unlock with Apple Watch very unreliable in 1Password 8 - system sleep seems to break it for 1PW8

ChrisJenkins

I often leave my Mac with 1Password open but minimised.
Every single time I come back to my Mac a bit later, such that the system has slept and then been woken (and unlocked by my Watch)

This is likely the culprit. In my understanding we don't have a way to determine when things like walking away and coming back happen. No presence detection would be how I would describe it. A workaround is when you return to the desk put the cursor in the password field of the app and press the return key. This should trigger an unlock prompt. This is what I do when I walk away for a break and return.