Some friends and I have just bought realms a few weeks ago, and we decided to copy and paste one command block machines that are in YT.
(They are 4: https://www.youtube.com/watch?v=pDWyhFgnqRk https://www.youtube.com/watch?v=_592YOUi0zk
https://www.youtube.com/watch?v=MkQozphTxGY
https://www.youtube.com/watch?v=lWLTJff_tzo )

After I made the machines, I get back to survival mode and when I try to eat, It doesn't stop to continue the animation until I stop pressing right click.