I needed to split a fluorescent light bulb into a series of physical layers that are stacked on top of eachother. So I drew all of these surfaces at their respective heights, positioned the bulb and split the surface to get what I was looking for.
However now for some reason, it is showing a few grey squares (see image) that I guess used to be associated with a surface, but remained after I deleted it. It only shows when I am looking at the model from specific postions and zoom (see next image where I zoomed in a bit and it disapeared). Also it doesnt show in any other view except for perspective.
Even when I select all and delete everything the squares are still there. Any ideas what that is? and how to fix it?