We have a team account and all our users have the permission "Reveal password" unchecked.
The users have all the write permissions, however, they can't create new items in the vault. And if they create them using the browser extension, this new items won't get synchronised to the team account and will only appear on their app.
The only way we have found to fix this is temporary give the users the permission back and then remove it again.
1Password Version: 6.5.1
Extension Version: Not Provided
OS Version: mac
Sync Type: Team