wordpress posts custom-meta box issue

[mdesignfa]

Hello to the WordPress development team!

im a wordpress plugin developer and I developed a Custom-Plugin for my customer (www.delbarbash.com) and I found a critical issue with post/products meta_box

when i disable custom_meta (checkbox) form the screen-options (top-page) and reload the admin posts page or products page But again, the field was taken by PHP rendered (I saw this from view-page-source)

Issue: and when i update some product meta value from database or by ajax or somewhere else and then update the post the post will send the old meta_keys and meta_values to the wpdb and it seems to be a bug or malfunction Of course I disabled entirely the meta_box with the aid of remove_meta_box function (in my plugin)

My suggestion: to get rid of this weird issue I suggest a new system that when a user disable this meta_box (or all other boxes) from screen option an JS Confirmation take effect and ask the user (if you dont have un-saved values on this page, we will reload the page again) After page reload the page must-not render that box with PHP again! (instead of hidden that box with just CSS)

Thanks a lot!

Thank you for considering and checking my request and believe that this can be a big problem!