Chrome Version: 71.0.3578.98

What steps will reproduce the problem?
(1) Open DevTools
(2) Make a request which triggers a CORS preflight. ex:  http://crbug.com/894693 

What is the expected result?
Second (main) request has an initiator, either to the preflight OPTIONS request or the same initiator as the preflight.

What happens instead?
Second (main) request in the network panel does not have an initiator.