Good new I found why I had the problem… I can’t say if it a real bug or if this normal… here is how to reproduce the problem:
In Apearance > Customize > Static Front Page > Check “A static page” and set “Front page” AND “Post Page” to the same page where you put the shortcode I published before.
You can see the problem on my Drone website (I will remove this tempory page in 24h).
As you can see it creates an infinite page… (I only created 15 posts).
Another question too… as you can see in the pos http://www.speedrone.com/2/ I put a random text between the button and the blog shortcode and I don’t find where to change the color… any help?