Placing CesiumSunSky in UE sublevel


I have the Cesium World Terrain on my UE project’s main, persistent level. I would like to create a regular UE sublevel of that persistent level to hold CesiumSunSky, so that it can be separately checked out in our repo by the lighting designer. When I create the sublevel and add CesiumSunSky, I see that the GlobeAnchor component is added. So far so good. The editor view shows the Cesium World Terrain lit by CesiumSunSky as expected. Great. But when I preview the game via Play mode, I get a black screen.


I figured out why. It has nothing to do with Cesium or geolocation. I needed to have summoned the Level Details for that sublevel and set Initially Loaded and Initially Visible to true:

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