diff --git a/ui/src/pages/ProductionProductCostingHasCostDetail.vue b/ui/src/pages/ProductionProductCostingHasCostDetail.vue
index 0f859db..562b0c3 100644
--- a/ui/src/pages/ProductionProductCostingHasCostDetail.vue
+++ b/ui/src/pages/ProductionProductCostingHasCostDetail.vue
@@ -2891,8 +2891,9 @@ function syncGroupTotals () {
   groupTotals.value = detailGroups.value.map(group => (
     (Array.isArray(group?.items) ? group.items : []).reduce((acc, row) => {
       if (!shouldIncludeRowInGroupTotal(group, row)) return acc
-      acc.tryTotal += resolveRowTRYTutar(row)
-      acc.usdTotal += resolveRowUSDTutar(row)
+      // Sub-header must mirror the amounts already rendered in the row.
+      acc.tryTotal += parseMoneyInput(row?.lTutar)
+      acc.usdTotal += parseMoneyInput(row?.usdTutar ?? row?.lTutarUSD)
       acc.quantity += resolveNumericRowQuantity(row)
       return acc
     }, { tryTotal: 0, usdTotal: 0, quantity: 0 })
@@ -3278,6 +3279,9 @@ function onRowQuantityInput (row, value) {
 
 function triggerUIUpdate () {
   syncGroupTotals()
+  nextTick(() => {
+    syncGroupTotals()
+  })
 }
 
 function normalizeRowQuantityDisplay (row) {