Methods disappear in https://petstore.swagger.io/ (Problem)

Hi,

When I click a method to get more information, it just disappears current location and appears in the `default` section at the bottom of the page and I still don't get information. I think this may also effect other swagger ui users as well.

Just go to https://petstore.swagger.io/  and click a method, you will see the problem I mentioned above. 

Thank you