Ticket #47593: 47593.diff

src/wp-admin/includes/class-wp-users-list-table.php

@@ -295 +295 @@
                 <select name="<?php echo $id; ?>" id="<?php echo $id; ?>">
                         <option value=""><?php _e( 'Change role to&hellip;' ); ?></option>
                         <?php wp_dropdown_roles(); ?>
+                        <option value="none"><?php esc_html_e( '&mdash; No role for this site &mdash;' ); ?></option>
                 </select>
                         <?php
                         submit_button( __( 'Change' ), '', $button_id, false );

src/wp-admin/users.php

@@ -119 +119 @@
                         $role = $_REQUEST['new_role'];
                 }
 
-                if ( ! $role || empty( $editable_roles[ $role ] ) ) {
+                // Set role to empty string if no role option is selected.
+                if ( 'none' === $role ) {
+                        $role = '';
+                }
+
+                if ( ! empty( $role ) && empty( $editable_roles[ $role ] ) ) {
                         wp_die( __( 'Sorry, you are not allowed to give users that role.' ), 403 );
                 }