I did the “Publish and Share with Friends” thing and got a link to play my game in a browser. The first time I did it, the lower half of the window showed the “Game Info” from the Properties screen: game name and game description.
I’ve made a few builds since then. I don’t know what I changed, but now the screen only shows the game playfield, zoomed in to take up the whole window. This even happens with the first build, where I could see the info before.