Sandbox navigation

Is there any way to Pan in the viewport of the Sandbox.
Im only able to rotate around the center of the scene.

Ctrl + LMB, or simply RMB, works well here (default arcRotateCamera behaviour).

Not here. Both does nothing.

I seen your scale issue here : Realworld Scale

maybe it’s related : your model is so large that panning with default value do a very tiny move.