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UPDATE: If I go back to 'All' tab and then back to 'XHR' I see both requests, so I guess it's some kind of chrome bug?
The GET request completes successfully but I cannot inspect the response. This occurs randomly in some of the endpoints of my api.
Firefox always logs the response.
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Preflight requests are a mechanism introduced by the Cross-Origin Resource Sharing (CORS) standard used to request permission from a target website before sending it an HTTP request that might have side effects.
A CORS preflight request is a CORS request that checks to see if the CORS protocol is understood and a server is aware using specific methods and headers. It is an OPTIONS request, using three HTTP request headers: Access-Control-Request-Method , Access-Control-Request-Headers , and the Origin header.
A CORS preflight OPTIONS request can be triggered just by adding a Content-Type header to a request — if the value's anything except application/x-www-form-urlencoded , text/plain , or multipart/form-data .
You can always have a better view of the network communication via
chrome://net-internals/#events
Maybe you'll find something blocking it before reaching the dev tools..
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