So I had selected to look just at one vendor's stuff in my wishlist. I then wanted to look at what was on sale in my wishlist. As I clicked on the pop-down menue, it selected the delete all button which is under the pop-down menu then deleted all that vendor's stuff from my wishlist. not cool.

W10, Ryzen 5 1600x, 16Gb,RTX2060Super+GTX980, PP11, 11.3.740