Pointed dripstone items in underground pools

The bug

If you generate a dripstone caves single biome world, you sometimes can find pointed dripstone dropped items in the pools. It seems they tried to generate on the ceiling but failed for some reason.

Related to MC-225858.

How to reproduce

Seed: 5661789494295513012
Coordinates: /execute in minecraft:overworld run tp @s 281.00 6.91 193.46 264.30 2.85