Abysses not spawning correctly on 16.5 Lighthouse

I've run three back to back lighthouse maps where I got either 1 or 2 abyss trails in lighthouse where the map modifiers clearly state area contains 4 additional (1 map with 5 additional) Abysses. I have other content blocked, and the map does not appear to be too filled with mechanics, yet still the majority of abysses did not even spawn into the map.

Update:
I was trying to figure out what could have been causing this, and realized that I had a memory tear open from Eagon that had started with Lighthouse, but the other maps were not completed. I finished this memory tear and killed the boss and restarted my game and the abysses started showing up again. I am not 100% certain this was the cause but tinfoil hat it seems to have worked.