3D tiles buildings are missing lighting


I’ve created 3D tiles from esri multipatch buildings with FME and uploaded these tiles to Cesium for testing (sandbox) but I cannot figure out how to illuminate them properly, so that the walls had different lighting like in this example which is uploaded as gml to Cesium ion.

Welcome to the Cesium Community!

This may be caused by a setting specific to the FME software itself. There has been other users who experienced issues with shading on 3D Tiles exported from FME software before, such as here.