From ba5ea0a7dc23492bf1f203e4bc71335989ea1ffc Mon Sep 17 00:00:00 2001
From: dkharton <dharton13@gmail.com>
Date: Tue, 4 Sep 2018 12:24:57 -0700
Subject: [PATCH] Explicitly set ajax() XHR to asynchronous. (#3038)

---
 src/ajax.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ajax.js b/src/ajax.js
index 1916f4ea080..d8b0712594d 100644
--- a/src/ajax.js
+++ b/src/ajax.js
@@ -66,7 +66,7 @@ export function ajaxBuilder(timeout = 3000, {request, done} = {}) {
         url = formatURL(urlInfo);
       }
 
-      x.open(method, url);
+      x.open(method, url, true);
       // IE needs timoeut to be set after open - see #1410
       // Disabled timeout temporarily to avoid xhr failed requests. https://github.com/prebid/Prebid.js/issues/2648
       if (!config.getConfig('disableAjaxTimeout')) {