I was looking up the text in-game and the texture of the font in the zip and found out that "k" is different between the two, idk if it's only this letter that is inaccurate but yeah when I typed the letter to put in a username when you first open BB+ it was different
comparison: 
(the one on the right is in-game)
edit: I looked into it even more and it looks like if a letter goes too high or too low (like how "p" goes further down than "a" for example) although not all of the letters of that type are inaccurate (like how "p" itself is accurate but "v" isn't)