I’m a chemist and we sometimes say, that chemistry doesn’t do all teh job. Sometimes alchemy is necessary. 🙂 Experiments may be carried out properly, but sometimes the touch of magic (or just simple luck) is needed for our reaction to be successful.
I’ve tried simple trick – copied the functions.php file from the parent theme into my child theme and quickly switched the content. Result? All my functions just work, as well as my media library.
Simple answer: coding. For some reason (maybe you can explain me why?) functions.php has to be coded in ANSI, I believe it was in UTF-8 before. And that’s it.
Gosh, what a day, almost midnight in here.