Nope, you are not the only one! That is an issue of the font renderer using an “even-odd rule” in vector rendering.

https://en.wikipedia.org/wiki/Even%E2%80%93odd_rule

What is your OS & OS version? This has generally gotten better over the past couple of years.

You can also use the static fonts, however, which don’t have vector overlaps, and Will therefore avoid this issue. In fact, it you were working on print design, it would probably still be better to use static fonts at this point.