This is game breaking, I'm playing solo on our realm and I can't do much. Every time an new entity drops from an ore block or just anything really, it lags like crazy. And it's not the device (played on Windows 10, Nintendo Switch AND Android) nor is it my connection (400+ mbps)
I made my friends and I move to Bedrock and Realms because I thought it would be more stable under Microsoft's umbrella... So far, I regret my move and this is completely unplayable. If this doesn't get top priority when people who play realms repeatedly pay a subscription, I think it mean you care little about your customers. This has been going for too long now.
It's not the same issue as MCPE-141420 at all as this is happening only after I close the book and regardless of the length of the string text or whether it contains line breaks or not. It could be a single character and it will still disappear.