Glitchy bug when embedding font in PPT

I get this super weird bug when embedding a font in PPT. What could be the problem here? The other embedded font works completely fine. Anyone seen this before?

Is this a TTF on Windows? If so, it might be a hinting problem.

TTF on Mac. Only happens when I dont have the embedded font installed. And only happens with one of the embedded fonts.

Mac MS Office apps never could embed (properly).

In any event, I recommend the Make your font work on Windows tutorial.