Laptop and Desktop View Shortcuts Broken

When I press Command 1 I can see the site layout for mobile devices.

When I press Cmd 2, Cmd 3 and Cmd 4 the layout view increases but Cmd 5 and Cmd 6 no longer work.

Is this a bug?

Do you have the XL and 2XL breakpoints selected in the Theme Studio Screens panel?

Of course!

Problem solved, thanks Ken!