Nidalee Invisable Spears [GAMEPLAY]

The enemies nidalee spears were invisible. Their team was saying they could see them, but all the players on my team were saying that you could see the red glow around the tip of the spear, but not the spear iteself. The enemy was using the Headhunter Nidalee skin. I did not get any pictures of this. I do not know how to reproduce this bug/glitch, and this is my first time seeing this issue.