So I pay for a Realm since a few months and I play with some friends on a survival world.
The world is consequent, with a huge number of chunks explored and a lot of mobs for farms etc.
BUT since the 1.14.3 update the world becomes unplayable (blocks unbreakable, items pick up very long, buttons stay pushed for 10 seconds and we take 30 seconds to eat).
It's the same in realm or singleplayer.
But in 1.14.2 (tested in singleplayer) the world is like before the update so all is perfect.
Obviously it's the 1.14.3 which broke the game.
So please patch this or if you can't (I don't believe this), add a way to change realm version so we could use the 1.14.2.
Actually I regret my purchase for the realm.
The screenshot with the big red bar at bottom right is in 1.14.3 and the other is in 1.14.2.
I hope you will consider my request.
(I'm French so forgive my poor English.)
Thank you for your report!
We're actually already tracking this issue in MC-138550, so I resolved and linked this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.