I am running version 13.7.1 on PC, 32 GB Ram.
When I switch on 3D for a layer, when I want to work on other non-3D layers in the timeline, I can't see them. If I play the comp back in preview I can see them however.
To work on the comp, I have to switch all layers to 3D. I only need 2 out of the 16 layers to be 3D. This surely is not right?
Switch your camera to "Active Camera". Or make all the other layers 3D.
Switching over to Active Camera did the trick. Thank you.