This is borderline bug/ux. In this post: 本好きの下剋上: Volume 4+ discussion thread - #104 by seanblue - Reading - WaniKani Community, the gif I put in the hide details section is cutting off the last line or so of text in that section. This happens on my iPhone 8 in portrait orientation. It’s fine in landscape as well as on my computer.
Here’s a picture in case it’s hard to reproduce. You should be able to see a little bit of the text in the line being blocked by the image.