cursor lost on right side of screen Studio M2

Sometimes I loose the cursor on my new Studio M2. I usually find that is is off the screen to the right side of screen. If I move the mouse to the left it eventually reappears on right side of screen. I'm not sure of this, but is it trying to go to another monitor on the right side of my monitor? I do not have a secondary monitor. But in System Settings - Displays it shows two monitors, both the same.

In another box it shows "Push cursor through edge of display. Is this the problem? I cannot uncheck it.

All help appreciated.