22.3.1 version. Clipping path on a object. Try to draw a solid color over and it acts like the blending mode is set to color or multiply. It is transparent in color. Same with a clipping mask curve over a object. Not working. And I tried to use the pen tool. The bezier line gets invisible. Zoomed back out and it got visible again. Random error.
Can you explain the step you haven been trying. I do not understand what you mean by "Clipping path on a object" Are you adding a vector layer mask to a smart object layer or clipping a smart object layer to a shape layer. You can not draw on a smart object. How about posting some screen capture of what you are doing.