diff --git a/src/wp-includes/css/admin-bar.css b/src/wp-includes/css/admin-bar.css
index 687ede01f6..d03f895b6a 100644
--- a/src/wp-includes/css/admin-bar.css
+++ b/src/wp-includes/css/admin-bar.css
@@ -100,6 +100,13 @@
 	margin-right: 0;
 }
 
+/* Prevent a Chrome bug that inadvertantly activates
+   :hover states on an element that touches the extreme 
+   top left corner of the viewport. See #18868 */
+#wpadminbar .quicklinks {
+	border-left: 1px solid transparent;
+}
+
 #wpadminbar .quicklinks ul {
 	text-align: left;
 }