Illumination mounting instructions render has confusing assembly line

In V7.0.0-Beta1 (and current master at 1b354f8b), there is what seems to be an extra black line in the render for mounting the illumination

This is supposed to be a construction line showing the direction of movement for assembly (as with screws etc in other renders). In this render it not clear what it means. It might help if it were dotted, or had an arrowhead.

low cost and high resolution are the same.