Hi Cesium Team,
our team is working very actively on KML branch of Cesium, particularly for the support of KML network links. We were earlier working on Cesium B29 and recently migrated to the latest version Cesium 1.5. After migration, we observe an unusual behaviour in visualization of the KML polygons. For each building, there are different colours for roof and wall surfaces and the colour on the wall surface appears to be mixed with the colour of roof surface. However, we did not face the same issue with Cesium B29. We have attached the screenshots visualizing the same file in the two versions (Cesium B29 and Cesium 1.5).
Screenshot1: Visualization with Cesium B29
Screenshot 2: Visualization with Cesium 1.5
Could you please suggest, how can we resolve this issue.