In this short post I will describe how different environment could produce different result for the same tool.
Phantomjs is full web stack that enables tester to run headless browser automation. I am using phantomjs on MacOS and linux, but never on Windows.
By using google, I found this switch, here is gist for that:
What is important is that this switch is not supported by firefox web-driver. So be careful how you will use that switch in your script.