Light fixture glass

[MarsWyoming]

I am wondering if anyone has an answer for a problem that i have had with CA since ver 9. The light fixture glass in a live view or a CAD detail is not visible. I thought it was something I was doing, but I have noticed it in many screen shots here on this forum. I have fried to change colors, materials all to no avail. I find it very embarrassing when a client asks what happened to the glass when the program can do so many other things, and I have no answer. Does anyone perchance have an answer or "work around" for this. I really appreciate any advice. Thank you./

George Kelley
X1