Why did I add a bing map in UE5.1, and then when the editor started and stopped, the whole program stuck?
Hi @goodriver, welcome to the community!
When a Cesium3DTileset is destroyed (which will happen when you exit PIE), all in-flight network requests must complete before the destruction can be finalized. Usually this is just a few tens or hundreds of milliseconds, but it can be longer, especially if your network is struggling.