Since the clock is ticking, I decided to sit down today and figure this issue out for myself. I was able to come up with a solution to my problem!
If anyone has any issues with their full-width template on the AwesomeOne Pro theme, (or maybe even any other FlyThemes theme) Check out this easy tutorial I posted over at my site: http://ewsolutionsllc.com/how-to-fix-the-full-width-layout-of-awesomeone-pro-theme-by-flythemes/
It should fix your issue with no unwanted issues. 🙂
-Chris
@Kateřina Not sure what XML file you are talking about..
Update: After some experimenting, Beaver Builder actually seems to work with every Theme template except for Full Page. (Which is what I need to work..)
Any help is appreciated.