no Skill book drop from Kabala

like the title says. no book drop for 2 weapon skill points.
tried to reset the instance.
Kabala is marked done on the map. but didnt get the 2 skill points.

PoE 2 Bug Reports:
https://www.pathofexile.com/forum/view-forum/2214

My only suggestion is to do the rest of the campaign and see how many weapon set passives you have in the end. If not 24 and there's no unmarked skulls left on the map, either boss bugged or UI bugged and something is marked done and didn't drop.

same issue as Darkslay