[Gameplay] Wolves attack an invisible ward and push it out of their way.

I warded between blue side blue buff and wolves as Garen while I was attacking the inner turret. Udyr came to stop me through the jungle and aggroed wolves along the way with his Bami's Cinder. They chased him over my invisible ward and the big wolf took a swipe at it but didn't damage it. They took a few steps further before deaggroing and retreating back to their pit. As they retreated they crossed over my ward again and pushed it a couple hundred units out of their way. This occured from 16:50-17:02 in the replay I linked.

Playing as Garen by myself I was able to recreate this using every type of ward at every jungle camp with and without Bami's Cinder, playing on both red and blue sides.

Step 1) place ward (any type) along the path you intend the jungle camp to retreat. Step 2) aggro the jungle camp and drag them over the ward. Step 3) let the camp retreat over the ward and shove it out of their way.

Also, apologies if this is a new feature of the pre-season rather than a bug.