I just installed the ebay app to test the theory but it's put mine in the right order...Just sussed out what's going on . its a problem with sorting upper/lower case. Notice how the ones added to the end of the list have a lowercase first letter
I don't have it installed, it's one of the first things I remove.^^ well you didn't need to install ebay app as the first one listed in your app drawer is lower case. could you try switching to the stock/default home screen and see what happens