I have this while seeing the page Toolset -> Edit Content Template:
1. L’utilizzo di Mutation Events è deprecato. Al suo posto utilizzare MutationObserver. load-scripts.php:3:9644
2. window.controllers/Controllers è deprecato. Non utilizzarlo per rilevare l’User Agent del browser. ace.js:1:23901
And this opens when I click the "Edit" button:
3. Una richiesta XMLHttpRequest sincrona sul thread principale è deprecata a causa degli effetti negativi sull’esperienza utente. Per ulteriori informazioni consultare hidden link load-scripts.php:4:26272
I attach another screenshot.
I have no problems in other edit.php pages while using Page Builder.
That last message seems to suggest a problem with the ajax request being made by the page builder to load the details of the module you are editing.
I just updated my test site to the same version of WP Bakery and the latest Toolset plugins and I don't see any such issue.
So the first step to identifying the problem is a no-conflict test.
If you switch theme to twentyseventeen and disable all non-Toolset plugins, then edit the Content Template and try to open a module for editing, does it work?
If so it should be possible to work out where the conflict is coming from by a process of elimination.
If it still doesn't work we'll have to look elsewhere, but I'll wait to hear back from you first.