Fatal error when editing certain ACF fields

Hello,

Have found an issue when batch updating some fields and propose a solution. Have already patched it locally and on produciton, it works.

Current plugin: ACF QuickEdit Fields (version 3.3.8)

Error Details

An error of type E_ERROR was caused in line 29 of the file /var/www/production/wp-content/plugins/acf-quickedit-fields/include/ACFQuickEdit/Fields/Traits/BulkOperationLists.php. Error message: Uncaught TypeError: array_merge(): Argument #2 must be of type array, string given in /var/www/production/wp-content/plugins/acf-quickedit-fields/include/ACFQuickEdit/Fields/Traits/BulkOperationLists.php:29
Stack trace: 0 /var/www/production/wp-content/plugins/acf-quickedit-fields/include/ACFQuickEdit/Fields/Traits/BulkOperationLists.php(29): array_merge() 1 /var/www/production/wp-content/plugins/acf-quickedit-fields/include/ACFQuickEdit/Admin/Bulkedit.php(209): ACFQuickEdit\Fields\PostObjectField->do_bulk_operation() 2 [internal function]: ACFQuickEdit\Admin\Bulkedit->process_data() 3 /var/www/production/wp-content/plugins/acf-quickedit-fields/include/ACFQuickEdit/Admin/Bulkedit.php(201): array_walk() 4 /var/www/production/wp-content/plugins/acf-quickedit-fields/include/ACFQuickEdit/Admin/Bulkedit.php(187): ACFQuickEdit\Admin\Bulkedit->process_data() 5 /var/www/production/wp-content/plugins/acf-quickedit-fields/include/ACFQuickEdit/Admin/EditFeature.php(171): ACFQuickEdit\Admin\Bulkedit->get_save_data() 6 /var/www/production/wp-includes/class-wp-hook.php(326): ACFQuickEdit\Admin\EditFeature->save_acf_post_meta() 7 /var/www/production/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() 8 /var/www/production/wp-includes/plugin.php(517): WP_Hook->do_action() 9 /var/www/production/wp-includes/post.php(5110): do_action() 10 /var/www/production/wp-includes/post.php(5212): wp_insert_post() 11 /var/www/production/wp-admin/includes/post.php(709): wp_update_post() 12 /var/www/production/wp-admin/edit.php(194): bulk_edit_posts() 13 {main}

thrown


Solution:

/wp-content/plugins/acf-quickedit-fields/include/ACFQuickEdit/Fields/Traits/BulkOperationLists.php

Line 29
$value = array_unique( array_merge( $old_value, (array) $new_value ) );