This began yesterday with version 20w14a and still continues with version 20w15a on both single player and multiplayer. On multiplayer the server starts to load and then crashes with the error java.lang.IllegalStateException: Tag minecraft:water used before it was bound. I created a copy of the world and loaded the world on version 20w13b to test if the world would load. It did however, all of the lava in the world appears to look like water but is still lava.