I am trying to draw a triangle with the Pen tool. Click to start, click for the second point, click for the third point, return to the start to close the path. What happens is that the second and third points become smooth points. In addition the third point shows a sort of ghost square (of side equal to the stroke width) at the apex of the intended triangle. The Convert Direct Point Tool has no effect.
I have recently upgraded to CC217 on a Mac.