Using Cesium for Unreal plugin and Google photorealistic 3D Tiles, I went to a specific location in world and start to draw some roads with splines. But after drawing a few splines, I was not able to draw more splines. At this moment when I opened new project, I was able to draw splines! (again with limited numbers). Regarding these observations, I have this question: Is there any limitation in adding splines to cesium for unreal engine plugin? what is solution for this problem?