Waterfall first half is missing

[erezy]

Hey,

When running a test on https://naturebox.com/:
Firefox - http://www.webpagetest.org/result/140430...1/details/
Chrome - http://www.webpagetest.org/result/140430...1/details/

As you can see, in Firefox it seems that the waterfall is missing the first half of the resources.

Any idea?

Thanks,
Erez