My Games & Apps Empty when offline?

I suggest you contact https://support.microsoft.com/en-us/contactus/

Here is a link explaining how to play offline. https://beta.support.xbox.com/help/Hardware-Network/connect-network/using-xbox-one-offline

Same issue here. Really is ridiculous! While offline you can't see the content under the storage setting either.

Do you have to do this before you go offline?

Did activate the
Offline Mode when you dont have access to the internet?