Raw Results Missing 'Event Name' in Chrome


I have been looking at getting total times for running a page flows. I have been taking the Raw Data CSV and using the “Event Name”/column C to calculate the total time that the flow has taken grouped by test Run and First View vs Repeat View.

I am having an issue where tests run with Chrome and FireFox are not getting the Event Name, or the URL columns filled in. Is this a bug in WPT? Is it a limitation in Chrome/FireFox? If so, is there an alternative way to group results by Test Run and First View vs Repeat View.

Here are some test runs with out the event names in the raw results.

Here is a test run with event name in the raw results…