Update biomes does not shown up

When i updated my world from 1.15.2 to the latest snapshot, the new biomes like the warped forest, crimson forest and soul sand valley do not shown up when i use the command: /locatebiome  the things that i saw that was updated are the new mobs, items, and armours, tools, i don't know that the snapshot was crashing my world or not but i have my backup so it's ok hope you guys could fix it, thank you.