I have a local installation of Wordpress on my machine, which runs through Xampp.
I got a theme through the themeforest site, and with it comes the WPBakery Page Builder plugin. The big problem is that when I add an element to some page, it does not show me the element in the administrative panel. On the front-end it appears normal. Below image, I added an element (buttom) it only appears on the front end, in the back-and the element only appears in the classic editor.