I already had problems with one of the bugs of the previous version (1.14.2), in which the pigmans never forgot the player and always attacked it. Now in the current version (1.14.3) the problem seems to have been rescued.
BUT, another problem appeared. It was me (on 06/26) doing a mob farm / trap and no mob spawned, I went to watch the rest of the world and nowhere spawn hostile mobs.
All other dimensions are working normally, but no hostile mob is born in the dark as it should (overworld).
I wonder if you have any solutions to my problem. Game in the server vanilla version.