Is this happening for every one, or a subset of kanji? If so, aside from the one in the picture above, can you send me a few more characters with the issue?
Looks like it's happening with every kanji I'm studying, just started taking screenshots from two different schedules, just started the second one and I've got 14 already. Only this question type.
This bug is still occurring on this question type, and it's definitely just the app. The screenshots are from quizzing the same schedule, one on the app the other on the mobile site.