Abyss dont spawn

Supposed to have 3 abysses, but only got 1.
This happens every second map.
Map: Jungle Valley
Sextants: Abyss, Hunted Traitors, Magic Pack Size, Beyond
Scarabs: Gilded Abyss, Harbinger, Reliq, Bestiary
+ Abyss on map device
Never happend on Burial Chambers