I'm not sure if this has been seen here yet, but in all of the videos I have seen the ship ignores you until you get close. The instant I dropped from supercruise the Thargoid ship started chasing me down:
[video=youtube_share;iPFqnA1u-V0]https://youtu.be/iPFqnA1u-V0[/video]
[video=youtube_share;iPFqnA1u-V0]https://youtu.be/iPFqnA1u-V0[/video]