I don't do highlights on desktop or in mobile app. But 2-3 times now, in mobile app, I have touched a word of a verse or passage in a book (I wanted to look up the word) but instead I highlighted it somehow... didn't mean to, but the verse then shows up with a "orange looking background" and try as I may, I cannot undo the highlight in the mobile app. I finally give up make note of it .... and when I'm home on my desktop...then I go to that book and passage and undo the highlight.
What am I missing?