Overrun + Ritual on Lofty Summit is NOT working

I unfortunately just ran a Lofty Summit with a fully juiced waystone, overrun Abyss and Breach + Ritual Tablets.

Unsurprisingly this map is the worst for Breach, nothing new here.

Ritual only spawned 3 instead of 4 - although my atlas passives force always 4. So that's a fail.

And then the overrun was a joke. I found 5 abysses and then the encounter was over. The 2nd HALF OF THE MAP WAS EMPTY, there were no mobs until the boss...

WTF??!

Seems like few bugs in one map. You might want to post it in the bugs forum as well if you haven't already.