Fix item counts, PR/QT conversions, validation and department loss

app/expense/manage_purchase_request.php

@@ -370,8 +370,9 @@
     recalc_totals();
   });
 
-  $(function() {
-    load_departments('department_id');
+  $(async function() {
+    // Options must exist before retrieve_request() selects the saved department
+    await Promise.resolve(load_departments('department_id')).catch(function() {});
     flatpickr('#request_date', { dateFormat: 'd/m/Y', allowInput: true });
     flatpickr('#required_date', { dateFormat: 'd/m/Y', allowInput: true });
     if (request_id) {