With some fonts in InDesign (in this case, HEX Franklin), the PDFs that are exported show weird rendering issues (see screenshot). I tried reading up on this, but couldn't find a clear answer as to why this is happening, or what to do about it. InDesign itself displays the type correctly.
My findings so far
- This seems to be caused by the even–odd fill rule, which can show overlapping areas of a polygon as transparent.
(vs. Nonzero winding, which fills those areas, as desired)
- Only a few fonts have this issue, not all
- When the type is converted to outlines, everything is fine
- It may be a display problem of macOS, not an error inside the PDF, according to EvenOddTT, danielchooper and a discussion on the fonttools Github
Is there a setting in InDesign (CC 2022) I can use to fix this? I'd like to keep my type intact if possible. Changing the font files themselves is also unrealistic, I fear.
I'm grateful for any help. Thanks in advance!