Unfortunately, none of these solutions gets me back to what I had in SLM3, whereas, the Perform window was full screen with the controls on the side, and by tapping the song I wanted, the lyrics appeared full screen as well as the controls, then at the end of the recording OR if I tapped the "X" icon, then I was returned to the full screen list.
If I choose the List Only layout, with window slider icon FULLY to the left, then tap on the song I want to play, the full screen lyrics pops up, the recording starts, and all the other actions take place that I have optioned in Automation settings. And when the recording terminates, then I am returned to the full screen list. The problem is that if happen to tap the wrong song, and tap the screen to go back to list, the recording continues to play, and I have no control of it. This is because this full screen lyrics screen that popped up when I started the song has nothing to do with the chosen layout. I don't know what this screen is, but there is no way to place any control options on it, and in fact the top system icons are not even present. If there was some way put controls on this screen, then this would solve these full screen problems.
One thing I've figured out, so far, is that there really isn't any difference in the various layouts, as far as functionality goes. It's just how the options and control icons are arranged on the layout that makes them different. I can make any of them look and function exactly the same as any of the others. They may as well just been called Layout#1, Layout#2, .... as so forth. Not that there is anything wrong with this flexibility. It just occurred to me because I was thinking in the terms of Perform Mode rather than Perform Layout.
Life was so simple in the old days.