datapack functions not working in 1.13 realms

Functions in datapacks work fine on a local map, but when I upload to Realms, things don't work.

It did work in 1.12, and I have been updating my map in the 1.13 release snapshots.

To be sure, I created a brand new map (in 1.13 release), and created a single function in the datapack (following the tutorial at https://minecraft.gamepedia.com/Tutorials/Creating_a_data_pack ), and again it works fine locally (the function is a single "say" command), but when I upload to Realms, it does not work.

Running `/datapack list` shows the datapack there, but it does not acknowledge the function at all (in autocomplete, nor when entering it, it says it does not exist). I have also tried making it a .zip file before uploading, again it works locally, but with a zip file it does not even show it in `/datapack list`. I have tried searching for this, but as realms has just been updated to 1.13, I'm guessing it's a new issue.

 

Let me know if you need anything else.