Thats new that surely didn't work this way in the past.
Basicly after you change the max slider sizes and edit your character - that character that is stored on server. Then when your client loads the character (yours or someone elses) if given slider size is higher then max in its settings, it would use max value instead.
Edit character to have extra sizes , exit the game, restore original meta file (Aka disable the size mod) load into the game. You will see that your character got default max. Apply mod again - load in - now you see the enhanced size. That how it works for me.
@Tamers - tamers don't have breast slider to begin with. You use some model swapping?
Basicly after you change the max slider sizes and edit your character - that character that is stored on server. Then when your client loads the character (yours or someone elses) if given slider size is higher then max in its settings, it would use max value instead.
Edit character to have extra sizes , exit the game, restore original meta file (Aka disable the size mod) load into the game. You will see that your character got default max. Apply mod again - load in - now you see the enhanced size. That how it works for me.
@Tamers - tamers don't have breast slider to begin with. You use some model swapping?