I was trying to search for podcast apps. When the apps are listed, some of them have "top developer" sign (blue diamond), and when I select one app and go into it and come back to search results again, the "top developer" signs changes to some other apps.
For example, look at the following snapshots:
All apps are from top developers (click the image for full size)
Some of previous apps are actually not from top developers (click the image for full size)
Is this a bug or is my OS affected like in Mr. Robot?