Sometimes a user can be trying to edit some credentials and it does not appear in the vault.
This happens because the user does not have privileges to see the device/credential because of the permissions on the access group.
To validate this, you need to access the following: Settings → User management → Users, edit the user configuration, and change to “access group” tab:
Now, with this information you need to validate the permission in the access group and compare each one until discovering any misconfiguration that are conflicting with the rules.
WARNING: senhasegura always will follow the more restrictive rule.