Choosing to mask the MPW, does not hide the Asterisks, when one goes to Basic Options. I am sure that this is just an oversight on your part, bit I think masking the length of the master password in Advanced options is useless, if you can still figure it out in the Basic Options.
BTW, I read some comments yesterday about the Show Asterisks button not being shown, etc. This morning I have noticed that if you do not choose to mask the master password, the button is not shown, as it shouldn't be.
Regards,
Romeo :)