Fonts not on the same line

When I open some Scrivener files (created with Scrivener 3 on my Mac) on my iPad and starting typing in a Scrivener document often the font is placed slightly below the line of the preceding text (as though the preceding text had been superscript, but the same size font). I tried to restart Scrivener and changed to default settings for Scrivener on the iPad, but it didn’t help. (I would send an image but I’m on my iPad and don’t see how to do it.)