When updating to WP5.6, the WPBakery Page Builder disappears in the post/page edit screen. I was told to install jQuery Migrate Helper, and that made WPBakery Page Builder work (show), but gives a error message:
jQuery Migrate Helper — Warnings encountered
This page generated the following warnings:
Query Migrate Helper
This plugin, called Enable jQuery Migrate Helper, is not a fix. It is a temporary solution to give your plugin and theme authors time to update.
The browser console at your end shows the following error when deleting an element:
Uncaught TypeError: Cannot read property ‘storageCreateShortcodeString’ of undefined
It looks like the server is restricting or blocking some code due to which the property such as storageCreateShortcodeString becomes undefined. This in-turn is causing an issue with editor at your end.