Moderator
t-p
(@t-p)
Removed ‘postcustom’ from get_hidden_meta_boxes in screen.php file with no success.
You mean this file: \wp-admin\includes\screen.php
If so, as the adage goes, don’t modify core files (unless you know what you are doing in there and are aware of the limitations and drawbacks this imposes). Modifications can cause:
– security risks,
– performance degradation,
– broken plugins/themes,
– you will lose all changes when you next update the WordPress, etc.
Try to find the issue without modifying the core files.
Have you tried:
– deactivating ALL (yes all) plugins temporarily to see if this resolves the problem (plugin functions can interfere). If this works, re-activate them individually (one-by-one) to find the problematic plugin(s).
– switching to the unedited default Theme (Twenty Seventeen, etc.) for a moment using the WP dashboard to rule out any theme-specific issue (theme functions can interfere like plugins).
If you can install plugins, install Health Check. On the troubleshooting tab, you can click the button to disable all plugins and change the theme for you, while you’re still logged in, without affecting normal visitors to your site.
