Index: branches/5.3.x/core/admin_templates/js/forms.js
===================================================================
diff -u -N -r15677 -r15690
--- branches/5.3.x/core/admin_templates/js/forms.js	(.../forms.js)	(revision 15677)
+++ branches/5.3.x/core/admin_templates/js/forms.js	(.../forms.js)	(revision 15690)
@@ -79,6 +79,18 @@
 	if ($.isFunction(window.CodePress)) {
 		CodePress.run(/*FCKeditor_OnComplete*/);
 	}
+
+	if ( !$.isEmptyObject($CodeMirrorEditors) ) {
+		var $editor;
+
+		for (var $editor_id in $CodeMirrorEditors) {
+			var $textarea_element = $('#' + jq($editor_id)),
+				$height = parseInt($textarea_element.height(), 10);
+
+			$editor = CodeMirror.fromTextArea($textarea_element.get(0), $CodeMirrorEditors[$editor_id]);
+			$editor.setSize(null, $height);
+		}
+	}
 }
 
 function Form() {}
@@ -368,4 +380,4 @@
 		}
 	}
 	return used;
-}
\ No newline at end of file
+}