When I reached Novos to find Lankin for the beginning of Act II mainquest, the quest log unbugged:
View attachment 2772546
And after I reloaded it bugged again:
View attachment 2772550
I am officially out of words or wits to invent words.
How the fuck does it function?!
P.S. During the second quest from Milio the Shark in Laroavia, the strangest thing happened - I've triggered the fight with pirate girl but at the same time managed to press dialogue buttons so fast the next line appeared. So, despite pirate girl being dead, I've chosen the option of siding with her, which spawned a group of assassins hired by Milio.
Yet, because getting positive quest outcome requires you talk to the girl after you beat assassins, which wasn't possible since she was dead, I've still got to complete quest and get -3 morality. In the process looting her, the assassins, and getting reward from Milio.
Despite the bug, I've decided to save the progress as is, since this situation is completely unique.
Lore-wise, I think my Hero just went to Milio and put pirate's head on the table. Then, in complete silence, he put on the table heads of all three assassins. Milio, as understanding as any mob boss should be, brought the money, after which both parties parted their way. Heavy silence wasn't broken even for a single moment.