Addons Don't Tranfer When Uploading Worlds to Realms

When attempting to upload a world that has resource and behavior packs applied (after triple-checking the uuids and verifying no errors with the packs), resource and behavior packs do not transfer to realms. It seems that they are purposely excluded, as the world and level data transfer successfully.

 

This issue occurs both on Windows 10 and on Xbox One, leaving me with access to only vanilla textures and behaviors on realms. 

 

I hope that this issue is resolved promptly, as several people interact with my realm frequently in the course of a day, and it is currently unworkable due to the lack of functionality of addons.