POST with Content-Type application/json doesn't work in playground

[crichey]

The playground submits the content-type as form instead of application/json even though the method is annotated with consumes = ['application/json']. Therefore when used in the playground the application rejects the request.

[fabiomaffioletti]

Not able to reproduce. Here is the request sent when doing a PUT:

Request URL:http://jsondoc.eu01.aws.af.cm/api/cities/1
Request Method:PUT
Status Code:200 OK
Request Headersview source
Accept:application/json
Accept-Encoding:gzip, deflate, sdch
Accept-Language:en-US,en;q=0.8,it;q=0.6
Cache-Control:no-cache
Connection:keep-alive
Content-Length:61
Content-Type:application/json

Please open a new issue if the problem is still there, describing how to reproduce it.