Have an odd problem where I set the .positions property of a polyline with an array of points. I use the exact same methods for creating and managing the data, the only difference is that the array of positions itself either has a point added or taken out. When I set the property the entity updates with the new added point, but if a point was delete nothing happens until I redraw the line in some other way. Any obvious reasons for this before I chase this further, some caching mechanism or, uh, something?
If it’s not obvious I’ll try to replicate the problem in a sandcastle. I’m using latest Cesium, latest Chrome.