Yes, I had this issue too, it’s because of the custom query search function in file:
back-in-stock-notifier-for-woocommerce/includes/admin/class-post-type.php
public function custom_search_query( $query) {
$custom_fields = array(
'cwginstock_subscriber_name',
);
$searchterm = $query->query_vars['s'];
$searchterm = $query->query_vars['post_type'];
$query->query_vars['s'] = '';
if ('' != $searchterm) {
$meta_query = array('relation' => 'OR');
foreach ($custom_fields as $cf) {
array_push($meta_query, array(
'key' => $cf,
'value' => $searchterm,
'compare' => 'LIKE'
));
}
$query->set('meta_query', $meta_query);
};
}
This code gets applied to all search queries, I’ve edited it to fix quickly:
public function custom_search_query( $query) {
$custom_fields = array(
'cwginstock_subscriber_name',
);
$searchterm = $query->query_vars['s'];
$post_type = $query->query_vars['post_type'];
if ($post_type === 'cwginstocknotifier') {
$query->query_vars['s'] = '';
if ('' != $searchterm) {
$meta_query = array('relation' => 'OR');
foreach ($custom_fields as $cf) {
array_push($meta_query, array(
'key' => $cf,
'value' => $searchterm,
'compare' => 'LIKE'
));
}
$query->set('meta_query', $meta_query);
}
};
}
Please fix it ??