Billboard occluded by the terrain or water mask

CesiumJS
1

I’m creating billboards in the Cesium Viewer with a TerrainProvider, and I’m seeing the bottom half of the billboard be occluded at some camera angles and zoom values. I’ve set the heightReference to several different values testing this issue but nothing seems to work(CLAMP_TO_GROUND, CLAMP _TO_TERRAIN, …). I also tried to set a negative z value in the eyeOffset which has worked except for some zoom values(OUT). I’ve never had the problem in the past. The heightReference property has always worked as I would have expected.
Cesium 1.123

image
Any suggestions on what to do would be greatly appreciated,
Scott

2

Have you tried setting depthPlaneEllipsoidOffset in the Viewer to a negative value?

Have you tried setting showSkirts to false?

Can you reproduce your problem in a Cesium Sandcastle? https://sandcastle.cesium.com/
This would it make easier for us to see what is going wrong. Else, we can only guess.