This is a fix for the Floral Hygiene, Superb Soakster, and Princess Cordelia’s bathtubs that exhibit a surreal kind of “transparency” (displaying the self shadow of stuff beind them instead of their own) by default.
2015-09-13: This seems to be fixed as of 1.10.63 (possibly earlier; I only just noticed it isn’t an issue any more).
This is done by setting a flag named “0x0B” in the MODL and two of the MLODs to 1 (like it is in e.g. the Rub-a-Dub Tub which does not have this problem).
Princess Cordelia’s Bathtub:
s4pe + wrappers/fixes by Inge and Snaitf.