I found the problem. Not sure if it is supose to be this way, however, it is.
Okay, when you add a Fullwidth Slider to a Fullwidth Section, you have to click to insert a Module.
When you choose Fullwidth Slider, you get a screen that asks to Add New Slide.
When you click to Add, you get a screen that asks for the Heading. I type the heading and scroll down.
At the Background Color, it says “Use the color picker to choose a background color for this module. In all other cases I have run across, there is no color chosen. Here the color white is automatically pre-chosen for you. In my mind, this is a Bug. There should be no color chosen, which would therefore allow for your images to show through. I bet if you check, the previous version does not have White (#ffffff) pre-chosen for you.
Thank you!