blazes can detect player and hit them with fire charge through blocks

Pigman can detect the player through solid blocks

nether portals reload previous cache maybe not really sure how to describe except that after cache is cleared and force upgrade MC-149518 and MC-142228 are recreated after entering a chunk with a nether portal

observers not repeatedly firing when facing another observer

chunk loading better but not fixed snapshot

lighting still an issue in snapshot

mobs pathfind to air blocks

1.14.1 pre 1 still has chunk loading issues