Enemies completely ignoring player character

https://youtu.be/VJohIm9j10U

Blooming Field Level 79
Mods: Breach, Delirium

How to reproduce: Not sure. I noticed that sometime during the Delirium encounter, enemies stopped attacking me unless I attacked them first.
I am using Headhunter, so maybe there is a mod on rares that causes this. The behavior persisted throughout the whole map. In the video you can see an example during the breach, where nothing wanted to attack me at all.

Edit: Leaving and re-entering the map fixed the behavior, enemies then attacked again as usual

Bump. It keeps happening. Doesn't matter which map. I assume it's the shrouded modifier, the one that keeps porting you to the monsters that attack you. At some point they just start to completely ignore you until you port out of the map and back in.