As seen from the screenshot, the line is really a rectangle and no care is taken regarding to its draw order. The line rotate to billboard to the camera, and when it is placed near something else it is possible for some of its width to sink into those meshes. I don't know if this should be the case or could we do something with it.
The bright side is that all the lines are properly behind and in front of things like a real 3D object. For example if those meshes are translucent, we could see through to the lines like this.
(And you see the "sinking" effect more obviously here)
As seen from the screenshot, the line is really a rectangle and no care is taken regarding to its draw order. The line rotate to billboard to the camera, and when it is placed near something else it is possible for some of its width to sink into those meshes. I don't know if this should be the case or could we do something with it.
The bright side is that all the lines are properly behind and in front of things like a real 3D object. For example if those meshes are translucent, we could see through to the lines like this.
(And you see the "sinking" effect more obviously here)