Thanks, I see what might've caused this
For now to fix this you can just F7 -> "Complete all tasks"
If you have other tasks that you don't want to complete, you can delete this variable from your save file and trigger story_chapter_3_event_6 again
Thank you for the incredibly fast response! I really appreciate it. I'm downloading the latest update tonight, if I run back into this issue, I'll give this a try!