Tiles not loading when in "Play" Mode

[MartinBell]

Hi all!

Got a problem here and need to figure out what it is pretty quickly.

When I press Play (Simulate), many tiles disappear and all the others seem to drop to their lowest LODs.

See these images from the Samples Project, which behaves the same way:

Any thoughts on what might cause this and what the solve might be?

This is latest UE, 5.3.1, and Cesium 2.0.0.
I’ve tried it on 5.2 and it’s the same.
I am on a remote machine, using Teradici. However we tried it on a colleague’s laptop who is not on Teradici

[Kevin_Ring]

When you Play (or Simulate) in Editor, the editor viewport cameras are no longer used to drive tile selection. Only player cameras select tiles. More information here:

Cesium collapses when i press "simulate" button in Unreal

This is sort of working as intended, but admittedly confusing. It’s not obvious to me how it should work… In a Simulate session, the Editor camera does not affect tile selection. This is useful if you want to use the Editor camera to examine the world as it really is without affecting it. It’s the same as starting a normal Play-in-Editor and then clicking the Eject button. You can fly the Editor camera around and see the actual state of the world, including the missing parts of the globe that a…