Okay, so this IS a bug. I had a customer sandbox demo my app this morning and could not access fullscreen. As you may know, after hours of being perplexed yesterday, I discovered the box was unchecked at some point without any action on my part–so I checked it off again yesterday and desktop/tablet worked immediately. This morning prospective customer can’t make fullscreen work and I find the box mysteriously unchecked again. @Jason @Mark this is causing some drama - users are already not tech savvy enough to quickly install to desktop and now when they do manage, there is further drama and I cannot possibly keep monitoring whether that box has been unchecked. I have also emailed support but please see if you can get this faulty reset issue fixed for those of us for whom desktop is critical to the user experience. My app hosted on www.gosupr.com if you need the url. Thanks! 
