switch to pcb editor

You’re already in the PCB editor (currently in 3D view).

To toggle back to 2D:

@help Where is the View Mode toggle to switch between 2D and 3D in the PCB editor?

This is what the Flux documentation says about it:

“If you need to inspect specific layers or debug layer-specific issues, switch back to the 2D view using the View Mode toggle in the top toolbar.”