Pointed dripstone can grow through some blocks located between "growing" parts.

Doesn`t seems logical, that it can grow through (under) the hopper, half-bottom slab, honey block, and even 2 non-full "blocks" (example: hopper + cauldron)

On half-top slab it grows "maybe" as intended...

Showcase video of problem:
https://youtu.be/Tc5415IqAuQ

Used gamerules:
/gamerule randomTickSpeed 10000