Two accounts - now needs two different passwords every time you login?

Here's another bad real-world use case. Someone asked me if I had a password for a shared account. I searched for it in 1Password on my Mac, and it didn't come up, so I told them I didn't have it. I realized later when I did a similar search on my phone that I did indeed have it, and it was in a shared vault that was locked on the Mac. Now, "of course", you might say, "how would it know what was in a locked vault?". Which misses the point. This is actively hostile UX.