Weird Luden's Echo bug

After winning a teamfight yesterday I went b while my team pushed mid. When I was at our inhib turret running with some minions, I happened to notice the Luden's Echo animation bounce off myself and two caster minions and we took the damage from the passive. The only enemy with Luden's was Nid, who was defending their inhib turret. I took no other damage.

I feel like it probably isn't intended for the passive to hit across the map...