Storyline 360: Quiz Question Responses Shift Slightly on Hover

Thanks for the suggestion, Wendy! From all of my review, there is nothing in the size or position of the boxes or in the text itself that is causing it. This seems to be supported by the fact that the issue does not appear in the SL preview, only in the published version in our LMS. I've attached several gifs that (if they work) show the shift when the course is taken in our LMS, the lack of shift in SL preview, and then I click through the various states to edit in SL that also show no shift.

I also experienced the shifting behavior in Articulate Review, but thought it may be a glitch in that system. I'm perplexed, especially since it doesn't happen on all questions or all responses.