Here is a video where you can encounter the bug.
Here you can see the bug. My “known words” are colored in green/teal. I specifically hide the pinyin for known words.
However you can see the “special words” (here it’s special because it’s the name for soybean, I think) are also having their pinyin hidden. I’d like to attach my settings so you can recreate, but it’s restricted to 1 image for new users. I will reply to my own post with the settings.