Seeing subsurface/hidden lines

[Spectre5]

When working in CQ-editor, I find that that lines within some distance of the "surface" are shown on the screen. For example, take the box shell example:

result = cq.Workplane("front").box(2, 2, 2).shell(0.1)

and I get:

Even just a simple box shows the corners going into the box a small amount:

The amount of zooming in/out does not seem to affect this.

Is there a setting to control this behavior?