Last night I've updated Centreal to v2 and I had to redo the home page with the new visual composer. Today I noticed a strange behavior that is reproducible with the following steps:
I open the site http://www.filipebrandao.pt/wp, I navigate to one of the post on the home page by clicking on one of the pictures, and then I go back by clicking on the browser back button. When I return to the home page I get a blue loading bar on top and a spinning circle on the right hand side. The bar takes very long to fill and it never completes and the circle keeps spinning. I've noticed this on Safari browser, both on an iPad and on OS X. I haven't yet had the chance to test it on other browsers.
If I then refresh the page the post of the last portfolio doesn't load.