When I create a data set from a data package, the menu where you can switch between query view and design view is missing.
The first image is what I'm expecting.
Second image is what I get.
Presumably 'Ty...' is the one which shows what you want. I don't see any query view and design view stuff. I know that data sets have a page design and page preview switch, which is at the top right hand corner. Perhaps you should make clearer what you are referring to, such as by including an arrow to what you see in one case.
Try clearing your browser cache.