The option to switch canvas between mobile and desktop appears to be gone when previewing or editing apps.
Since the new IDE, I can no longer switch the canvas between mobile and desktop sizes, or I can't find where to do this anymore.
I am having the same problem. It's a shock as it used to be up at the top right next to the app name. I figured it moved but where? I've been hunting for 20 minutes and searching docs and can't find any mention of it anywhere.
actually, if you create a NEW app, you can't set canvas size between mobile vs desktop anymore!
@tsuweng It should still work! You'll just need at least one component set to show on mobile. Let me know if that unblocks you here 
