Noiz - Comments

I seem to have a problem with the in-between match highlights windows. For some reason I can't change what I want to view on the right panel. As you can see on the screenshot the arrow that should reveal a dropdown menu for that is completely greyed out (as in, can't click on it). Can anyone tell me how to fix that since I have no clue how to get it done. Searched on the forums a bit for it but couldn't find a solution.