Prevent selections of objects in edit mode

Hi,

I’ve seem to be encountering some glitch. In edit mode, it often happens to me that when using Ctrl modifier key, actual scene objects get selected while I am in edit mode, which is super frustrating as the outlines then obscure the mesh I am working on. How do I prevent selections of objects in edit mode? This should never happen in the first time.

Thanks

EDIT:

So Ctrl+Mouse Click in edit mode selects actual scene objects, despite being in edit mode. This is what I need to remove/disable/kill.

Okay, so I found it myself, and turned it off. It was this, found in 3D View (Global):
[ATTACH=CONFIG]481464[/ATTACH]
I am curious though. How is this commonly used? For what use case would you want to select objects in edit mode? I wanna make sure I am not missing out on some common workflow by turning this off.

Thanks.