Remember the "secret" elements menu? When that existed, if I recall, it had fully functioning standalone elements. What changed in the code to "deactivate" their standalone functionality (other than removing them from any and all menus)?
BIZR is invisible after loading from a save as well. The bug was a result of making them use ctype for their colour (so that they could be coloured by FILT), but it's only since the new graphics system that they turn invisible as a result. Not a deliberate change to deactivate their standalone functionality.