Firefox netmonitor does not show body (payload) of CORS blocked request

Firefox devtools netmonitor does not show request bodies (payloads) for CORS blocked requests.

This also triggers this issue: We send from Firefox to remote server request for development purposes. Sometimes I disable the network completely from OS settings. I click on the send button on my web page, I want to copy that request to Postman. But that request seems CORS blocked because the server did not reply it. So we can not also export network disabled requests (when it is only for different domain).

But google-chrome shows all of them. Is there any way to see those requests on Firefox?

Here some more information: