Index: dashicons.css
===================================================================
--- dashicons.css	(revision 43972)
+++ dashicons.css	(working copy)
@@ -25,7 +25,7 @@
 	font-style: normal;
 	vertical-align: top;
 	text-align: center;
-	transition: color .1s ease-in 0;
+	transition: color .1s ease-in 0s;
 	-webkit-font-smoothing: antialiased;
 	-moz-osx-font-smoothing: grayscale;
 }