diff --git a/ui (gen4)/features/base.js b/ui (gen4)/features/base.js
index 1e9f82fe..f28b1d3b 100755
--- a/ui (gen4)/features/base.js	
+++ b/ui (gen4)/features/base.js	
@@ -624,6 +624,7 @@ actions.Actions({
 		{undo: function(a){ this.shiftImageTo(a.args[1], a.args[0]) }},
 		function(target, to){ this.data.shiftImage(target, to) }],
 	
+	// XXX BUG: this messes up direction handling...
 	shiftImageUp: ['Edit|Image/Shift image up',
 		core.doc`Shift image up...