Since I wanted to create a few dome shaped entities so I did this by setting Ellipsoid's z-index to 0 (for the ellipsoid surface) and viewer.scene.globe.depthTestAgainstTerrain flag to true. I didn't want billboard/point/label to be clipped off against the terrain so I disabled their depth testing. Everything seems to do what I expected except when I rotate the globe until the point is at the horizon, it is still showing the whole point rather than being clipped off.
I wasn't seeing this when I had the global depth testing to false.
Is there a way to keep the "domes" while the points/billboards/labels can get clipped off at the horizon?
PS. I'd like to attach pictures but I don't think I have Rich Text permissions.