pgx: Pgx v4 doesn't return all rows

I have the table that contains around 300k rows satisfying this query (when I send it to the db directly):

SELECT 
	b.id, pri.provider
FROM
	bookings AS b JOIN provider_information AS pri ON b.id = pri.id
WHERE
	pri.provider_info->>'supplier_id' = 'ID'

But when I do that via pgx, I retrieve about 3k rows:

config, err := pgxpool.ParseConfig(dbinfo)
if err != nil {
	return nil, err
}
config.ConnConfig.PreferSimpleProtocol = true
config.MaxConns = 80
pool, err := pgxpool.ConnectConfig(context.Background(), config)
if err != nil {
	return nil, err
}

const query = `SELECT 
		b.id, pri.provider_data
	FROM
		bookings AS b JOIN provider_information AS pri ON b.id = pri.id
	WHERE
		pri.provider_info->>'supplier_id' = 'ID'`


rows, err := pool.Query(context.Background(), query)
if err != nil {
	panic(errors.Wrap(err, "query bookings"))
}

for rows.Next() {
	if err := rows.Err(); err != nil {
		log.Println("next row", err)
		continue
	}

	// some code
}