I made an addon, resource and behavior pack, to use in my realm with my friends. I made a single-player copy of our world to use for testing the pack while I developed it. It works perfectly fine when I’m playing single player. When I upload both packs to our realm, only the changes implemented by the resource pack are any different. The behavior pack does nothing.
Comments 2
There might be something in the pack that Mojang doesn’t allow on Realms, now. I know they silently are denying any resource pack with ‘raytracing’ in it’s capabilities. Searching for similar bugs to mine got me to this report. I would suggest trying to remove features to see which one isn’t allowed, or link the manifest here and maybe a staff member can pin point what feature they’re silently denying like raytracing.
For context: Raytracing resource packs worked on realms before 26.x I don’t know the exact time and my last updated pack was uploaded sometime early Jan late Dec 2026/25. All versions of that pack for four years was accepted on my realm. No capability changes. Finally update all the baby mobs and such on my pack to find out this silent error. Not only did it not allow the upload, it silently removed the current RP on the Realm.
Your issue might be linked to whatever they are doing to deny packs on realms silently.
Note: I am not using any experimental features for this mcaddon