First off, I know this isn't so right to be placed on here, but since the Bug Report Section is pretty much like Fallout wasteland, I'll just drop it here and hopefully anyone can share reason and solution. Please bear with me for the long story.

Here goes the story:

1. I was building around Sanctuary. After going back and forth from another place, I got a no-target-marker Kidnap Quest from Preston in Sanctuary after I realized someone my doctor disappeared and nobody brought that up, so I reloaded my game.

2. In the second try out, I moved my doctor to Egret Tours Marina. However, the quest showed up after a Settler's asking for help. The conversation was buggy, some option didn't appear, causing me to not able to initiate rescue. But I still could pay the ransom, which later on got me to talk to Preston to complete the quest. Quest done. Then, I went back to Egret Marina, told my doctor to go back to Sanctuary. Day after day (in-game time), the doctor never came back. I reloaded my save and killed the doctor in Egret Marina.

3. After killing my ex-doctor in Egret Marina, I was trying to find a doctor replacement from a settlement. I fast traveled to Red Rocket and walked to Sanctuary back on foot. And one of my guards was reported to be kidnapped at Back Street Apparel. Rescued him. Fast-travel back to Sanctuary.

4. Around this time, I was building a penthouse and was going to put the Bartender there. However, he never wanted to work and so I had to kill him. Found a Synth chip. The new doctor I just replaced was bugged and always get stuck in my house. Pointing her way was pointless and she never attended the stand. So I killed her.

5. After this, I walked to Abernathy Farm to find another Doctor replacement and walked back to Sanctuary. Now the other guard was kidnapped. Reported by the Settler I just moved in from Abernathy. Kidnapping once again at Back Street Apparel. Enemies and area didn't even reset yet. First and second rescue had 1 real-life hour range. Anyway, I rescued him, fast traveled back to Sanctuary, and turned in the quest.

6. After this, I fast traveled off to Zimonja settlement. I moved one guy to Sanctuary to replace the Bartender I killed earlier. To quicken the process, I fast traveled back to RR, and walked back to Sanctuary on foot. This time, someone got kidnapped again, at Back Street Apparel again. And guess who got kidnapped? The guy I just moved in to be future Bartender.

If I anolyse this, first bugged non-marker kidnap quest always happened when I was building around Sanctuary. The quest was unavoidable even after the game's been restarted, however. As for the Back Street Apparel 3-times-in-a-row kidnapping, it always happened when I brought someone in to the Sanctuary.

Anyway, thank you if you read until this point. I've wasted more than 5 hours of gameplay because of these bugs and I had to reload from my previous non-bugged progress over and over again.

Please share your thoughts. Cheers.