The following contains spoilers, this bug is mild and not gamebreaking:
The unnamed raider (base ID: 0A0454DD) who takes the hostages during Casting a Line pre-spawns at the hostage location stuck in the stance that he starts the quest in (holding a gun on a person that is not there.) He can be killed prior to the quest, which causes the other raiders to just stand around when you arrive, killing them still triggers the ending scene with Jake and the quest proceeds as normal, despite not hearing the dialogue. Additionally, in most run throughs that I attempted, regardless of pre-killing the raiders leader or not, at least one settler usually stays there frozen in the hostage position or just wonders the area, without the option to recruit them, though this may be an issue with Better Settlers.