I can see two calls in network tab of dev tools using iron-ajax. If I remove the headers attribute from iron-ajax than I can only see single call in network tab.
Expected outcome
iron-ajax should call the service api only once instead of twice
Actual outcome
Steps to reproduce
Put iron-ajax element in a page for GET method
Set the auto attribute (optional) It can be triggered through javascript also using generateRequest() method
Now set the url attribute as
Open it in a web browser and open dev tools
In network tab tab you will see two calls for it one with response and other as a dummy call.
Description
I can see two calls in network tab of dev tools using iron-ajax. If I remove the headers attribute from iron-ajax than I can only see single call in network tab.
Expected outcome
iron-ajax should call the service api only once instead of twice![image](https://user-images.githubusercontent.com/35997906/35622468-f57573c4-06ad-11e8-83ea-779ebaf73535.png)
Actual outcome
Steps to reproduce
Browsers Affected