legion monsters may not count as 'enemies' or 'nearby enemies' while in stasis

Just had a phys reflect death when leap slamming on stasis legion monsters. Previously I had no problem running phys reflect maps at all.
Ran so many without any issue because of the 'nearby enemies convert 50% of phys to fire" ascendency, and I assumed the reflected dmg source was them not me. (I had tested it a few times and wasn't taking any noticeable dmg).
But suddenly died when leap slamming on stasis monsters, but not normal monsters.

https://www.youtube.com/watch?v=1wj3H8B7tCM has the clip.

I don't know what caused that rip but Born under Fire notable doesn't help against physical reflect. Enemies are not the source of reflected damage, their modifiers don't apply to it.