React prerender.io fetch as google is not working
Fetch as Google has a known issue where it doesn't automatically check for the fragment meta tag. If you enter ?_escaped_fragment_= on the end of the URL in Fetch as Google, it should see the prerendered page correctly.
The real Googlebot does not have that bug, and they will see the fragment meta tag and successfully crawl the ?_escaped_fragment_= URL on their own.