Caitlyn Net "E". After use, Cait is auto attacking enemy champion automatically w/o my control

I played Caitlyn recently and whenever I used the net ability she attacked the enemy champion without me putting the cursor on them. One of which happened to be against a Leblanc. I got her low, to where she split into her clone, and used me "E" the net. While she was "ghost" or "invisible" for that brief moment, Cait fired a shot which killed Leblanc while still invisible. I don't know if anyone else had this problem but here is the clip showing it.