LI fixes

static/nb.js

@@ -146,7 +146,7 @@ function nbInit(a,b){
                 return;
             }
             if (!keyExists){ //default logic: set text or value to data value
-                item["value" in item ? "value" : "innerText"] = value;
+                item[("value" in item) && item.tagName !== 'LI' ? "value" : "innerText"] = value;
             }
             else {
                 item.innerText = value; // do not try to overwrite value on option nodes