Seems to me that sometimes 1Password is not responsive to clicks, switching between vaults or categories, the prior list of items remains. It does not necessarily update at all. Multiple clicks or clicking around is the usual workaround. Doesn't seem to matter whether you are searching (text in the field) or not.
1Password Version: 7.2.576
Extension Version: Not Provided
OS Version: Windows
Sync Type: 1Password