Index: src/wp-admin/css/media.css
===================================================================
--- src/wp-admin/css/media.css	(revision 35487)
+++ src/wp-admin/css/media.css	(working copy)
@@ -627,6 +627,14 @@
 	width: 100%;
 }
 
+.edit-attachment-frame input,
+.edit-attachment-frame select,
+.edit-attachment-frame textarea {
+    -webkit-box-sizing: border-box;
+    -moz-box-sizing: border-box;
+    box-sizing: border-box;
+}
+
 .edit-attachment-frame .edit-media-header {
 	overflow: hidden;
 }