Lapis Lazuli generating above 32y

Hi! I Downloaded the oficial datapack for the 1.18 caves generation and found lapis lazulli above 32 in 2 different places. idk if it is some strange bug or feature, but i will report here.

Information:

• Version is 1.17.1 RC
• World Type: Default
• Datapack : Official 1.18 World GEN Datapack.
• Generate Structures: ON
• Coords: -129.232 61 95.789
• Extra Chest: ON
• Seed: -1218217845083270576
• Cheats: OFF
• Also, no, i don't installed any MOD/Texture,