Request content-type is not json

[hashg]

content-type is set to form-urlencoded

Accept:application/json, text/javascript, */*; q=0.01
Accept-Encoding:gzip,deflate,sdch
Accept-Language:en-US,en;q=0.8
Cache-Control:no-cache
Connection:keep-alive
Content-Length:32
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Host:localhost:5000
Origin:http://localhost:5000
Pragma:no-cache
User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.66 Safari/537.36
X-Requested-With:XMLHttpRequest

[allthesignals]

I'm seeing this same issue as well:

User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:40.0) Gecko/20100101 Firefox/40.0
Accept: application/json, text/javascript
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Referer: http://localhost:4200/login
Content-Length: 62
Origin: http://localhost:4200
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache

Using:

    "ember-cli-simple-auth": "0.8.0",
    "ember-cli-simple-auth-devise": "0.8.0"