[GAMEPLAY] Target select bug

Once an enemy(or ally) creature, champion or structure is selected with the left click mouse button, hovering over any other creature, champion, or structure will cause a big red or blue square to appear. The size of the square can be small(with minions, small champions and small jungle monsters) or pretty big(towers, inhibitors, blue sentinel, red brambleback, gromp, baron, and dragon). The latter can be pretty obstructing, since the square seems to reside on a higher plane than the other objects in the game. I haven't seen many others with this bug and re-installing the game does not fix it. It occurs every time the game is launched. To recreate it, just select any monster, champion, or structure and hover the cursor over something else that is target-able. Here is a video i made showing the bug. https://www.youtube.com/watch?v=BaKMrSj8JNM&feature=youtu.be