Piglins can "sense" soul fire through solid walls and retreats, even if they can't see them

Piglins can somehow be repelled by soul fire (but not zombified piglins) through walls although they can't visually see soul fire through walls.

How to Reproduce

1. Build a wall with the center being hollow
2. Summon piglin
3. Turn on subtitles
4. Place soul fire
   → Piglin retreats appear