are multiple objects at the spot where you right-clicked. when that happened, right-click will only apply to the object that is ‘on top’. if you wish the right-click to apply to another object at the same location, you will either have to move the ‘top’ object out of the way or perform a send-to-back to effectively send it to the ‘bottom’ so the item below will be the ‘top’ object. depending on the number of objects, you may have to do this a few times. 