AppLinks returns XML even if JSON is requested

 curl -v -n --header 'content-type: application/json;charset=UTF-8' https://issues.citrite.net/rest/applinks/2.0/listApplicationlinks
* About to connect() to issues.citrite.net port 443 (#0)
*   Trying 10.80.16.64... connected
* successfully set certificate verify locations:
*   CAfile: none
  CApath: /etc/ssl/certs
* SSLv3, TLS handshake, Client hello (1):
* SSLv3, TLS handshake, Server hello (2):
* SSLv3, TLS handshake, CERT (11):
* SSLv3, TLS handshake, Server key exchange (12):
* SSLv3, TLS handshake, Server finished (14):
* SSLv3, TLS handshake, Client key exchange (16):
* SSLv3, TLS change cipher, Client hello (1):
* SSLv3, TLS handshake, Finished (20):
* SSLv3, TLS change cipher, Client hello (1):
* SSLv3, TLS handshake, Finished (20):
* SSL connection using ECDHE-RSA-AES256-SHA
* Server certificate:
*        subject: C=US; ST=California; L=Santa Clara; O=Citrix Systems Inc.; OU=CPG; CN=issues.citrite.net
*        start date: 2014-04-15 13:35:11 GMT
*        expire date: 2015-03-14 00:00:00 GMT
*        subjectAltName: issues.citrite.net matched
*        issuer: O=Cybertrust Inc; CN=Cybertrust Public SureServer SV CA
*        SSL certificate verify ok.
* Server auth using Basic with user '.bot'
> Authorization: Basic LmJvdDp4ZmdjNTQzNmNoZw==
> User-Agent: curl/7.22.0 (x86_64-pc-linux-gnu) libcurl/7.22.0 OpenSSL/1.0.1 zlib/1.2.3.4 libidn/1.23 librtmp/2.3
> Host: issues.citrite.net
> Accept: */*
> content-type: application/json;charset=UTF-8
>
< HTTP/1.1 200 OK
< Server: nginx/1.6.0
< Date: Fri, 30 May 2014 11:50:56 GMT
< Content-Type: application/xml;charset=UTF-8
< Content-Length: 5922
< Connection: keep-alive
< X-AREQUESTID: 710x5102092x2
< Set-Cookie: JSESSIONID=90D80A6562250C5C63DB34721B6F78AB; Path=/; HttpOnly
< X-Seraph-LoginReason: OK
< Set-Cookie: atlassian.xsrf.token=AXYJ-U5JK-L1J8-MFCP|c585b14ea7bfc6738a5f3bd7a3dfe15ac9399337|lin; Path=/
< X-ASESSIONID: gi3g2r
< X-AUSERNAME: .bot
< Cache-Control: no-cache, no-store, no-transform
< X-Content-Type-Options: nosniff
<
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><list><list xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="linkAndAuthProviderEntity"><application><link href="https://issues.citrite.net/rest/applinks/2.0/applica