Is there an official statement that the implementation of the verification "your latency is too high" has been changed in 1.13 or/and 1.14?

I share the predominant opinion here. We still have a crucial server performance problem. My indicator is the following: Bait a zombie to move him close to a wall. Afterwards, from all angles the zombie stuck. Either a bug in the pathfinding (or collision detection) overloads the physic thread or the physic thread is overloaded by something else and prevents this calculation. I play on Spaggie's Vanilla community server

This should not be a minor issue. It's just unplayable.