I upgraded last night to v6.3.1, the latest on Google Play. I sync using 1Password Families. After removing and re-adding my account due to a known issue, the Categories view on "All Vaults" is empty, showing no items. When I select the Primary vault using the dropdown on the side menu, then the Categories view becomes populated with local data. I can select my Families vaults, which becomes populated with the correct information. Just the "All Vaults" display is empty. I can provide screenshots if it would help describe what I'm seeing.
1Password Version: 6.3.1
Extension Version: Not Provided
OS Version: Android 6
Sync Type: Not Provided