Objects inside or on the other side of an object (transparent or not) by default are not clickable. The “when clicked” puzzle has an “advanced options” located in the blue gear icon in the left corner of the puzzle. When the “x-ray” mode is checked the user will be able to click on object on the other side, inside or through any objects that are in front of the object with the “when click” puzzle that has “X-Ray” active. This also means that if you have multiple objects with X-Ray stacked on top of each other the and the user targets a spot that is in front of multiple objects with X-Ray then the click will count for each object the mouse is in front of that has X-Ray active.
If you need x-ray mode on for all your objects…and you only want these transparent objects to have x-ray active at specific times…you will have some conditional logic to work out to ensure the appropriate “when clicked” events are used at the specified times.