Pointed dripstone and dripstone blocks can be found in underwater caves and rivers

I don't think that's a bug; just a cave that generated underwater.

It is intended that dripstone can be waterlogged, so finding them in an underwater cave is most likely intentional.

the world type is default
seed:-3969607912251068390
coordinates:/execute in minecraft:overworld run tp @s -285.99 13.62 27.34 172.03 -13.75
version:21w13a

Renamed summary to not be confused with MC-223051.