Event Bug possibly? No hearths in Voracious Canopy?

I was here earlier and on the ship mission I did see hearths appear. However now that I’m doing the side mission in the “other side” of the Canopy, no hearths appeared since I’ve ported to this location.

The chance to spawn seems to be tied to the enemy type? I saw very few hearts when it was just ratch, unless one of the higher tier ones appeared. Could be a similar problem here.