Tropical Island Half-Empty

Hello,

~League: Domination
~Character: boredPleasure
~Map: Tropical Island
~Mods:
-Bruning ground
-Mobs have chain


So, I ran this map last night, and I ran the first half and it had no mob packs at all except right at the end, 2 small packs before the "portal" to the second half. The other half of the map was fine however.
Sorry I couldn't post screenshots or run the /debug since I dc'ed at the end and couldn't log back ><

Reproduce: ?????

Regards.