Edges disappear in certain top view

Hi All,

I have something happening that I can’t figure out. See attached video for SU phenomenon. When I’m in top view parallel projection, all of my edges disappear. When I start to orbit, you can see them again. This doesn’t happen for the lower level. They are both using the same style, but in one edges disappear, in the other, they don’t. Any thoughts?
Top View Question

Can you share the SketchUp file so we can see exactly what you’ve got set up? Send it by PM if you don’t want to make it public.

Got your model. This is a common graphics card/OpenGL issue. You have your 2D outlines of that furniture laying in the exact spame plane as the floor face. Move the 2D objects up a little so the graphics card can tell explictly which one is supposed to be in front of which. In the screenshot I’ve moved the two beds you can see up above the floor face by 2 inches.

I wonder why it’s okay on the ground floor and not the second.

The vagaries of OpenGL?

In general it’s best not to place 2D elements in the same plane like you’re drawing on paper.