CORS with Symfony, jQuery, FOSRestBundle and NelmioCorsBundle
Actually, my setup worked well.
Absolutely perfectly, if I might say it.
It was just some kind of... Stupidity.
An exit; was hidden deep in a PHP file.
Sorry for annoyance. I guess it's kind of a record in a text/quality ratio on SO.
Edit: I still hope that this issue can be a proper example of a fully CORS-compatible Symfony project.