I came across an article (https://jimshaver.net/2015/02/11/decrypting-tls-browser-traffic-with-wireshark-the-easy-way/) describing how Wireshark is able to decrypt SSL encrypted network traffic by making use of a feature in Mozilla Firefox and Google Chrome: If a system environment variable named SSLKEYLOGFILE is set to a valid filename, those browsers will write SSL key data to the file. Wireshark, in turn, uses to the contents of the file to decrypt SSL encrypted packets that it captures.

Assuming it's technically possible, it would be great if Fiddler could do the same as an alternative to use the Fiddler Root certificate.