Target Highlights Glitch?

During any game as of this latest 4.20 patch when hovering over any unit allied or enemy minion, champion, or building, instead of the outline of the target being blue and red respectively it sometimes will show targets as a large square/rectangular block of red or blue color. Keep in mind that I do have colorblind mode on and I'm not entirely sure if that has something to do with it or not. Also this glitch occurs in any map, any game mode. Any help or similarities in this matter and constructive feedback would be most appreciated.