A.) It could be a font size glitch (common to PS)
B.) It could be the font you are using, some fonts don't offer capital letters, some don't offer lower case
For the size problem, just make the font size damn big, and then you might be able to see it
For the font problem, just either use a diff font or find out which case it offers
If it's neither of these, then I have no clue lol