I just found a different between 1.4 and 1.5 with regards to wicket enclosure.
If you have a component in a wicket enclosure (say a feedback panel) and you set it visible false. Then subsequently try to set it visible true, wicket 1.5 will not be able to make it reappear. 1.4 had no problem with this. I get this in the debugger console: ERROR: Wicket.Ajax.Call.processComponent: Component with id [[id3]] was not found while trying to perform markup update. Make sure you called component.setOutputMarkupId(true) on the component whose markup you are trying to update. Douglas
