User interface clarity

There are quite a few ignores on very clear mistakes, as simple as a repeated word. My guess is that the user does not even see the mistake when reported.
There is a lot of very prominent text (large, bold) on the screen, and the actual text and reports are relatively small.
Could that be the cause?

I don’t think so, because most of the ignores come from the browser add-on and the editor, i.e. not from the homepage. Also, we underline both words, so the error seems to be quite clear.

That makes it even stranger.