Adding vertex to polygon in Layout

Have been struggling to add a vertex point to an irregular polygon. Formerly, in edit mode, I could click on a vertex, hit the command key and drag a new point.
Now what is happening is when I hit the command key it edits the point as a bezier curve. Is this new? Have not figured out how to add vertex points. Help appreciated.

When you first press Command it should give you the option to place a point (blue dot with a +). If you continue to hold Command after that, it switches to Bezier edit mode (blue dot with a curve.). Let go of Command immediately after placing the point.

Got it. Thanks for the help!