Some characters, like 'th' and 'ff', disappear in text strings when map is exported to PDF.
For example, the text string 'Ruffano Path Dr.' displays fine in the map, but when the map is exported to PDF, the string displays as 'Ru ano Pa Dr.'.
This occurs when the font being used, such as Myriad Pro and Calibri, includes ligatures. A ligature is a single character that replaces two or more other characters.
Consider the following example using the characters ‘ff’ in Myriad Pro:
The above is replaced by the following ligature in Myriad Pro, which is one character that has no space between the two arms of the ‘f’ characters: