I can't ride, I'm invisible to mobs and I can't use scissors

Hello. A week or two ago I created a realm with some addons together with my friends, but a few days ago one of them noticed that the mobs weren't attacking him, he couldn't ride any entity (horses, donkeys, llamas, etc..) and shears don't work for shearing sheep. We overlooked the bug and carried on as if nothing had happened, but over the days the bug happened to other Realm members and it's annoying because it affects the Realm experience for everyone.

I checked if it was a platform bug and I entered the realm from my mobile device, but the problem persisted.

I tried to replicate the bug in the same offline world thinking it was an addon error, but the bug never appeared :c .

I would be very grateful if you could help me to solve my problem to have the best experience in the game. Thank you very much for your attention.

NOTE:
in the attached photo when trying to mount the horse only its inventory appears.