abyss is broken

I am farming T7 cemetery and I use sextants + scarabs + map device augment + atlass passive tree with abyss chance + wandering path to add Abysses into my maps. So there should be at least 3 abyss in my maps but last 2 maps I got only 1 abyss each map. and I had very good amounts of wisps... I am upset... Also my friend told me he experienced the same thing today.