Hi, we tried to do some test to verify where the problem is:
We developed a site on a server using the Parent Theme (Enfold) Version Number 4.6.1
Everything works very well.

When we move the site on another server, using the same version of parent enfold theme, we have some problems (especially when we have a post slider on a page). If the parent enfold version is 4.5.4, then everything works (more or less) fine.