From the manual testers: When creating a request, if you clear the field of an item that is currently displayed, it does not clear the details of that item, which is confusing. What happens is a red-letter note appears under the search box which says, "Please select an item," but the ghost text says "Please scan or enter an item." So the red text at least should say, "Please scan or enter an item."
Can UX provide some guidance on this? Let's consider other similar controls when deciding on the behavior here (e.g. Patron and Item select on Checkout, Requester select on Requests).