Problem with abysses

Bug report reference number 3599730528
https://ibb.co/gFZX37d

Good afternoon.

Abysses stopped appearing on my maps. I'm playing through an MF build on a T7 map. I ran more than 100 maps and everything was fine, but the last maps just stopped spawning abysses. In my map mods I have a "region has an additional 5 abyssals" option, but on the map there are 1, sometimes 2-3, sometimes none at all. I run the ebis, winged scarab and elevated sextant mods, but nothing changes. What's going on?