When I click on a target, there's a yellow circle on a minimap showing the target's place. This mark came with the latest patch I suppose, because I haven't seen this mark before. I asked GM how can I turn it off, but he said I can't. He said it might change in a future patch.

So I'd like you to ask if you can change that. You don't have to delete this thing, just to make an option in interface menu so people can enable/disable this mark.