I am doing the tutorials with Android Studio  2.2.3. When I got to #17, Grid Layout, and attempted to add the buttons the result was significantly different than on the video. The popup for row 0, column 0 did not appear. Also, the green bars to indicate the rows and columns were absent. I noticed that the tutorial uses Android Studio 1.0. Does 2.2.3 operate differently? Any help would be greatly appreciated.