Structure Block size not updated on Realms

My friend has a realms and we are working with structure blocks on one of the worlds. While we are able to use structure blocks with dimensions up to 48 on worlds off of the realms (as the patch notes of 1.16 suggest), when we try to do it on the realms it goes back to 32 (the max size before 1.16). We have tried this on multiple worlds on the realms and all of them have this problem. We have also tried placing a structure block with dimensions of 48 while the world is off of realms and uploading it after, but the 48 reverted back to 32 as soon as the block was updated.