I only see this when I have written feedback, saved it, and go to the problem from the student's perspective. I don't see this if the student uses alignment characters in their answer. And I don't see this while still composing the feedback and using the preview button.
In case it matters, all my examples were in display mode; I didn't try inline.
Is this easily fixed? Is it just a problem with the stage where feedback is written to the database? Or is it a problem with how that feedback is read and loaded on the student's page?