I found out the problem with the Beast. When I first meet Isbeil and Queen Justinia (my main character is not the Beast, but Fane), the dialogue ends with a transfer to an acid pit. But before the transfer, the Beast says his name is no longer Marcus Miles, he is called the Beast of the Sea. This phrase does not complete the dialogue, you can see that it is possible to complete the phrase - but I don't have time to, the transfer of characters to another location (the pit) takes place.
If I temporarily remove the Beast from the group before talking to Isbeil for the first time in the sewers - there is no bug.
