Kirac Mission to "Slay the Beyond boss." Has no beyond boss.

Previously they should spawn via a bloodline mod. Something that has been removed. While it has been reworked into the arch mods, did GGG remember to also make the spawn guaranteed on these missions?

Voidspawn of Abaxoth: Summons a unique Beyond Demon when the entire pack is killed.

It would also make sense that these missions also has a beyond modifier since it makes little sense to have a "boss" without any other beyond spawn.

Same issue here. Lair map
Reference number is 1 745 505 527
Screenshot: https://imgur.com/oFWTgyx

Still happening to me in the Mud Geyser map

SS: https://imgur.com/a/PLFSX47
Reference number 3.263.132.226

Have same bug , report # 2,006,564,683

Still happening in Kalandra league... # 3,513,445,531

Still happening.
Had "Slay the Beyond boss." on Ghetto map without a boss spawning.

Also In my Vaal Piramid map
Reference number 3 007 491 500
file:///C:/Users/pbara/OneDrive/Dokumenty/My%20Games/Path%20of%20Exile/Screenshots/screenshot-0001.png

ditto

Same issue.