Just as an example (and adding some context), I care about loading more than other cosmetics due to their diverse arts and visuals:
I have 747 loading screens, from these I also manually filtered and favorited 300+ loadings one by one over my 7 years of the game since this cosmetic type launched in Season 4 Chapter 1, to be displayed during the loadings of the game as it was intended for.
Using the “random” feature (it randomly picks an owned cosmetic, or randomly picks a favorited cosmetic if exists any), I was able to control and customize ever further the visuals of the loadings of the game to my liking.
All these features got basically obliterated due to the weird behavior described above. If the island thumbnail were replacing the default loading (X Icon / No Cosmetic on image bellow) it would be fine, but replacing all custom selected overriden cosmetic (Random and Custom Selection) is not the expected behavior since it was described otherwise on the announcement, and a regression on the customization as I described above…