Navigation bar turns transparent (UI bug)

Here’s a cropped screenshot. I figured out the cause. On my iPhone I have the text size turned up. Settings > Display and Brightness > Text Size. Mine is set to the second to last notch. If I reset it to normal, the middle, the navigation bar is not transparent, as expected. It flickers for a split second, though from transparent to to opaque / translucent. So I’m guessing it’s a layout bug that has to do with text size (dynamic type) on iPhone.