Saving a character during auxiliary creation brings up a "too short" message when loading that character data and using it for a normal character.
I made an auxiliary character and saved it to possibly use later as my main character. When I loaded that character and tried to save it with some edits, the salon told me the character was too short (<150 cm) despite being over 200 cm without any clothes. When I was making the auxiliary I wasn't aware of the height drop for them and I can imagine that that's what is causing this issue. The height drop likely gets saved in the character data despite not using it in the normal Salon.
There was no way that I could figure out how to fix it to use the character data for my normal character as nothing I did got rid of that hidden height drop.