I was in the Aphelion's Rest Lost Sector in the Dreaming City. The weird part took place when I reached the first group of enemies and shot one of them. Useful info: I was alone, top tree nighstalker, and used a curated Spare Rations. Here's what happened: when my bullet made impact, the enemy acted like he was melee'd with middle tree Sentinel -exploding, attaching Void Detonators to nearby enemies, all of that. Immediately after, every enemy with Void Detonators exploded, I'm assuming by the explosive part of my round. And then, one enemy survived with full HP but was marked - as if from an OEM or a tether. That's all i have.