Lowercase m in certain fonts throws an exception

[EmmaSimon]

Not sure if there are also other letters that cause this, but m was the first one I found. A similar error is happening in a bunch, but not all of the fonts, including at least the following:

• astrology
• timesib

StringIndexOutOfBoundsException: String index out of range: 15
StringIndexOutOfBoundsException: String index out of range: 15
StringIndexOutOfBoundsException: String index out of range: 15

• greekc
• greeks
• scripts

StringIndexOutOfBoundsException: String index out of range: 0
StringIndexOutOfBoundsException: String index out of range: 0

• timesr

StringIndexOutOfBoundsException: String index out of range: 13
StringIndexOutOfBoundsException: String index out of range: 13
StringIndexOutOfBoundsException: String index out of range: 13