Hi tech, are there any other situations where that happens or is it only in that particular case?

What happens in the Options dialog if you go to the View section and use the buttons "Rotate/Pan/Zoom options" or "3D view angles" ? Do those sub dialogs come up in front of the main Options dialog or behind it?

Can you please e-mail me at moi@moi3d.com and I'll send you a test build with an attempt to fix it up. I don't seem to have a Sierra installation here to test with myself.

- Michael