#Firefox rewrote the "Edit and Resend" feature in 2022 and it has been broken since then. If I want to see the response I need to use the feature, export as Curl and run it in a terminal. If the output is a large single-line JSON, I need to export it to a file, open it in an editor and reformat.
So my top request for #Mozilla is: please add more #AI to everything ASAP.
@kAlvaro I just gave this a quick test and it seemed to work. Can you give me a few more details on the issue you're seeing?
@firefoxwebdevs Arrggg... I've tried to reproduce it with public facing websites and it works fine. It only fails with our JSON-based API server.

@kAlvaro could it be that your server has some auth header that's of one-time use?

hm although that doesn't explain why it works with curl

@firefoxwebdevs It's a JWT. I've step-debugged backend response and PHP (Symfony) submits the information. But net pane shows it as 0-byte response.
JSON requests generated from JavaScript always do weird things. For instance, the old Xdebug extension doesn't work with them.