I am totally stumped and find this more than a little bit weird. I tried to download the contest photo by right clicking on it after expanding the thumbnail. These are the options that right clicking popped up.

These are also the options available when I tried right clicking one of many other times.

I can't figure out what I was doing differently to get the two different options, I opened the image with a left click both times, and right clicked on the enlarged image both times. So, I started experimenting with other photos and started right clicking on them, most offered one or the other of the above options but some also offered the standard options that I am use to seeing where you can save the image, as in the example below.

Now here's the weird part, some of my very own photos allow me to save them, and others offer one of the other options where saving is not possible. Even though they were all uploaded the same way, and in one case they were all uploaded in the.same post, they offer different options when right clicking on them. The weirdness doesn't stop there, I went back to the contest photo and kept trying to get the third set of options to appear so I could save the photo and somehow it worked. I did the exact same thing as earlier, I enlarged the thumbnail by left clicking on it and then right clicked on the larger image. All of a sudden I had the third set of options and saved the image successfully. I have been unable to duplicate the process though and can't for the life of me figure out how or why I get the different options from the same process, sometimes getting all three options when right clicking on the same image over and over again. Perseverance ended up getting the contest photo downloaded but there is definitely something weird going on, wouldn't you agree?