@bertt This sounds similar to
- Disappearing features with Implicit tiling
- CMPT with I3DM's: features disappearing on map navigation
Do you have any insights that are related to this thread (and maybe the linked ones) that might explain the observations?
The question here is, very roughly, whether this is an issue in CesiumJS (that should be tracked in Issues · CesiumGS/cesium · GitHub , or whether this might be caused by the underlying data. (And if it’s the latter, I’d be curious what might have caused the issue. For example, whether this is caused by something that could be checked by the validator…)