1.14 has limited my render distance in realms to only 10 chunks, whereas just the night before 1.14 dropped it was definitely higher (like 16+). I've looked around about this issue and there's no mention of loss of render distance in the 1.14 notes but I've seen a few other people complain about it.

I've seen a number of people say that the render distance in realms was always 10 chunks (some say it's lower) so I don't really know what to think. But I have screenshots demonstrating that my render distance was definitely higher than 10 before 1.14.