Apologies if I’ve missed something…
The OPs issue appeared to be how it was affecting viewports in Layout, that is, scenes specifically set up in SketchUp for Layout.
As I understand the workflow you just mentioned, the scenes you have set up for controlling tag visibility without changing the camera (I used to use that workflow myself for everyday modelling until I started using a different one), those scenes don’t get used in Layout (or at least I never did). They are used for efficient modelling…?