After an afternoon of using, I found the thickness in edge select mode somehow confuses me when it comes to selecting edges under the X-ray mode. I don’t know why exactly.
My assumption is, due to the increased thickness, the dimmed back wires, though dimmed, still maintains a relatively strong feel when looking at them.
When I changed to Face Select Mode, those wires become easier to distinguish.
I wonder if anyone else feels the same thing.