Certain chest loot generates randomly in different worlds with the same seed and location, when it didn't before 1.14. This behavior is different than all other chest loot, and applies to villages, pillager outposts, ruined portals, and bastion remnants. To reproduce, create two different worlds with the same seed and notice that the same village has different loot for the same chests. These commands are for the seed -336141819713325 to quickly teleport to a village chest (the first one is a plains house loot table, the second is a plains weaponsmith loot table).

/tp @p 1.5 64 43.5

/tp @p 653.5 71 -810

Other loot generates correctly when doing the same thing.

/tp @p 327.5 60 46.5