HELP! MY CURSOR RANDOMLY SWITCHES BETWEET MY DESKTOP ONE TO THE LEAGUE ONE!

Hello guys! So whenever i get into any kind of game my cursor starts switching betweet my regular desktop cursor to the one i use in league. It's veeery distracting and damages my play. If anyone of you guys know the reasoning behind this or has had the same kind of problem i would greatly appreciate it. This all happened randomly one day i hadn't even heard of a problem like this the next day i had it.