When ES dashboard is set as the default menu item, linking to stream items doesn't work as seen here:
https://peakfun.com/stream/item/71
I also tested with Protostar template and with the simple URL plugin disabled with the same result. As soon as I swap ES dashboard from being the default menu item, suddenly linking to stream items works as expected. Also note that even when ES Dashboard is the default menu item it works when the menu item's alias is added as seen here:
https://peakfun.com/stream/stream/item/97