Nginx alpha batch cookie bug

setcookie.php

<?php 
/**
 * This works fine without the http2 directive. However, if the http2 directive is enabled, all cookies after
 * the first cookie are lost.
 * 
 * Working | listen: 443 ssl;
 * Broken | listen: 443 ssl http2;
 */

// Set three cookies
setcookie('EXAMPLE_COOKIE', 'Example Value');
setcookie('ANOTHER_EXAMPLE_COOKIE', 'Another example value');
setcookie('A_THIRD_EXAMPLE_COOKIE', 'A third example value');

// Print the cookies on the next request. 
var_dump($_COOKIE);

// HTTP2 Enabled: array(1) { ["EXAMPLE_COOKIE"]=> string(13) "Example Value" }
// HTTP2 Omitted: array(3) { ["EXAMPLE_COOKIE"]=> string(13) "Example Value" ["ANOTHER_EXAMPLE_COOKIE"]=> string(21) "Another example value" ["A_THIRD_EXAMPLE_COOKIE"]=> string(21) "A third example value" }

Worked around by manually using
fastcgi_set_param HTTP_COOKIE $http_cookie