Zed triggers all of ziggs mines when shadow jumping

I played as a zed, and when I ulted an enemy, the ziggs threw down mines on my shadow, when I jumped back it instantly activated all of his mines (Death report said I took 700 dmg from his mine ability). I don't think this is intended since I should only activate the ones I touch..being the one initially under my shadow, and whatever ones I hit walking out of it.

Not all of them, please look into this