we are experiencing problems with the WP Backery Frontend Editor, the error seems to happen in an unpredictable way and it affects the save page operation with the consequence that we loose hours of work and we continue wasting our time recreating the same pages/posts. Some operations instead seems systematically to cause the error, such as adding an overlay text on a background image (as the Seoul white text on the Error.png image).
For your convenience we have added some screenshots taken from the system with information about the system configuration and details about the error (Error.png). Please consider that the error is not advised to the user, we get noticed about it opening the debugger in Chrome.
Please consider this error is quite critical and prevents and has a significant impact on our site development activity