I experience the same bug
Pointed dripstone hurting entities through solid objects is an intended feature? I can understand snow layers, rails, and maybe carpets, but trapdoors too? It just looks weird, blocks don't even sit directly on the dripstone, they float a noticeable distance above it.
Could reproduce, if on Windows use: Alt+0160 or Alt+255. Versions before 23w17a would just show the "NBSP" character (as seen in the attached screenshot).
[media]First version this occurs in is 1.19.4 Pre-release 2.
Affects 1.19.4
Only seems to affect /tp and not /spreadplayers.