Workaround: saved administration site user and pass may appear on the Wireless configuration page, replacing the WPA key.

modules/luci-base/luasrc/view/cbi/network_netlist.htm

@@ -59,6 +59,7 @@
 				<%- else -%>
 					<%:unspecified -or- create:%>
 				<%- end -%>&#160;</em></label>
+			<input style="display:none" type="password" />
 			<input style="width:6em" type="text"<%=attr("name", cbid .. ".newnet")%> onfocus="document.getElementById('<%=cbid%>_new').checked=true" />
 		</div>
 	</li>