Alt tabbing out and alt tabbing back into league game makes my cursor smaller

While my game is loading or when I want to change a song I alt tab out of league and when I alt tab back in, my mouse is a lot smaller. It does not get bigger until I click or unclick the colorblind mode to reset the league resolution. I have a dell xps 15 and even though it can handle league at the highest resolution, I play at 1920x1080. I am not the only one with the same problem. I saw a thread with the same problem but the other person had a dell xps 13. it might be the computer.