I finally got my preview stuff working as this :

I might add some more content to check everything is working 😉

( I somehow noticed that people don’t like when I post updates that keeps on crashing 😡 )

Edit : I’m not fully satisfied :-/

What do you think about this one ?

Edit 2 : I released the patch yesterday if you didn’t noticed 🙂

Edit 3 : Everything should be fine in the last update.