Custom Fields Box Missing from Editor after Updating to 4.8.1

[trueitalic]

After upgrading from 4.8 to 4.8.1 the custom fields meta box disappeared from regular post editor. It is not listed when looking in screen options. Rolling back to 4.8 returns the box.

[Soean]

Maybe this is caused by ACF 5.6

remove_wp_meta_box

We added in a new setting in v5.5.13 allowing the default WP custom field metabox to be removed. Although simple, this can drastically speed up the load times of the post edit page! From Advanced Custom Fields version 5.6.0, this setting will be set to true by default. If you require access to this metabox and don’t mind the extra load time, you can always change this setting via the acf/settings filter.

HOW TO KEEP THE DEFAULT WP CUSTOM FIELDS METABOX

add_filter('acf/settings/remove_wp_meta_box', '__return_false');

source: ​https://www.advancedcustomfields.com/blog/acf-pro-5-6-0-ui-ux/

[trueitalic]

Replying to Soean:

Maybe this is caused by ACF 5.6

remove_wp_meta_box

We added in a new setting in v5.5.13 allowing the default WP custom field metabox to be removed. Although simple, this can drastically speed up the load times of the post edit page! From Advanced Custom Fields version 5.6.0, this setting will be set to true by default. If you require access to this metabox and don’t mind the extra load time, you can always change this setting via the acf/settings filter.

HOW TO KEEP THE DEFAULT WP CUSTOM FIELDS METABOX

add_filter('acf/settings/remove_wp_meta_box', '__return_false');

source: ​https://www.advancedcustomfields.com/blog/acf-pro-5-6-0-ui-ux/

Thanks Soean, you're correct. Appreciate the quick response and resolution.