I have this 750mb world that will 100% crash if three or more players get far away by a 2000 blocks from each other.

If I upload the Ps4 save, does it help?

EDIT Feb 12th

Today we confirmed the bug persists in the 1.14.30.

This is the test we performed:
There were 4 players in the game. 3 of them started flying, one on each direction, when the players reached around 5000 radius distance from the central point the server started to "flicker" a lot to me (host) (flicker, small freezes one after the other).
Two of the players flying died by hitting the invisible wall at around 6000 radius distance, then a few seconds after the server crashed with the world corrupted message.

Invisible wall is when you fly faster than the chunk generation by the server (I assume) and then the server needs to block motion by putting an invisible wall in non existent (yet) chunks.

 We can perform further test under request. let us know.
BR