Tiles not loading when in "Play" Mode

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

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: