Orianna -Protect (E) Bug

Hello! i main orianna and recently i have discovered a bug Usually you can protect your ally and even if he dies the ball stays on the same ground spot where he died within the range you have. This happened to me already in 5.19 patch and i thought it will fix by itself. I was wrong. I tested it in normal mode and in custom mode, both times the ball comes back to orianna, which it shouldnt! as it is said the ball should stay at the spot where your ally dies. If anyone else encountered this please tell, so riot employees can fix this. thanks!