iOS Subscript Unicode Numbers cut off?

[ArtOfWarfare]

I have buttons with the subscript digits on them. The bottom portion of the digits are cut off.

I've tried changing the frame of the button's UILabel, the bounds of the button's UILabel, the clipsToBounds property, and the baselineAdjustment property, but none have yielded any effect.

Any suggestions for how to make the subscript digits appear properly?

 

[PhoneyDeveloper]

What happens when you display the same text in a regular label? Are you specifying a custom font or one of the built-in fonts? What happens if you change the font?