Subtitles accidently appearing in portrait orientation of story app

Here is a screenshot of what I mean:

This happens in an Android app that has a combination of Picture Story files and Default text files which is probably a bit unusual… The error occurs when I view the story pages in landscape mode and then swipe to the Scripture text pages. Now when I turn the phone back to portrait and swipe back to the story page, I get subtitles on the pages in addition to the yellow highlighting. They only disappear when I select another story in the book selector. Could this be fixed? Thanks. I tested it on several devices and the app was built with the latest SAB version.