stairbuilder specials 127 (and possibly others?) should crush. this breaks Cyberdreams MAP19, as the switch does not crush the cyberdemons that block your path.
The ->crush field is never initialized in vanilla doom.https://github.com/id-Software/DOOM/blo ... oor.c#L547
The probability that the ->crush field contained a 0 in it was low, so usually lead to the floors crushing. Doomwiki lists the specials as crushing specials.
Choco hardcodes this to always crush:https://github.com/chocolate-doom/choco ... oor.c#L551
if a fix isn't possible, suggesting a compat flag