4.11 and mobile preview

I was testing out my 4.10.4 project on 4.11. When I switched to mobile preview, the window was no longer the correct size. I checked with the Match 3 example and it was doing the same thing. Is there something we are supposed to do so our mobile preview will be the correct size?

I did some testing and noticed that the stand alone mode is also not changing to the correct size. Any ideas?