Mine have also been like that for a few weeks. Collections have been a mess lately with the wrong views showing for various products and are just not getting fixed.
Mine are doing this too, also noticed Mug price over $25, add multiples of the same item, but when I refresh, it goes back to one I one image! Lots of issues today!
I am having the same problem with horizontal jigsaw puzzles showing as vertical in my collections even though I have designed them in the horizontal format.