Having the same issue on our realm too, also Xbox one. Serious lag, often open chests or barrels and the sounds happen but no inventory shows you will see the black hole of the barrel or the open chest instead of the contents/inventory. Also there will be many stutters when mining or crafting and then you're booted from the realm and when you reload back in you're quite often between 5 to 10 blocks away from where you were stood when you were disconnected. (Can be very dangerous being moved if you're DC'd in the Nether or Ravine.)
This is also happening for me, once you close the book and reopen another time to add more entries all the spacing has gone, it scrunches up not allowing for enter spaces. For me this happens on Bedrock and realms Xbox one.