Every instance of letter 'e' displaying in wrong weight

I have a weird glitch in a document that uses League Spartan font. My heading paragraph styles are in bold weight but all instances of the letter 'e' are displaying in the wrong weight. This only happens once the style has been changed to Semi-bold or bolder, and only to the latter 'e'. Even more weirdly the 'e's weight changes in the opposite direction, weight-wise. So if I make the heading style bold, the 'e's become normal, if I make the heading style Extra Bold, the 'e's get lighter in weight. It's super weird, and very frustrating! I need to save off and package a final file but the 'e's are not playing!

Would love to hear any iudeas of how to fix this and why it might be happening...