Ticket #26882: 26882.patch

src/wp-includes/css/editor.css

@@ -74 +74 @@
         text-shadow: 0;
 }
 
+.mce-toolbar .mce-btn-group > div {
+        white-space: normal;
+}
+
 .mce-toolbar .mce-btn-group .mce-btn.mce-listbox {
         border-radius: 0;
         direction: ltr;