When I test the same page on Chrome and an Firefox 56, the latter does not seem to accept HTTP/2 server push anymore. I tried several instances, always with the same result: With Chrome, the pushed assets come in even before the html page does. With Firefox it looks like a classic HTTP 1 waterfall instead.
Here is one example from the same public instance:
This was clearly different in earlier Firefox versions, e.g. here in Firefox 55: http://www.webpagetest.org/result/170824_KG_EXY/
Have others experienced this too? Any trick to make Firefox accept push again?