Since the latest beta, whenever the iOS has not been used for a while (and has probably been frozen/killed by iOS), when unlocking the app, the "Categories" view briefly shows as empty with the "Learn how to save passwords and more" header, before actually loading the content.
I would say it is visible for a second.
It's not that big of a deal but I still wanted to report this because it has not been there before.
1Password Version: 7.2.8
Extension Version: Not Provided
OS Version: iOS 12.1.4
Sync Type: Not Provided