diff --git a/frontend/src/dialogues/socialnetwork/VocabPracticeDialog.vue b/frontend/src/dialogues/socialnetwork/VocabPracticeDialog.vue
index 2170ba3..3625a01 100644
--- a/frontend/src/dialogues/socialnetwork/VocabPracticeDialog.vue
+++ b/frontend/src/dialogues/socialnetwork/VocabPracticeDialog.vue
@@ -533,6 +533,15 @@ export default {
         this.wrongCount = Number(this.srsSession.wrongCount || 0) || 0;
       }
 
+      // If the stored session has an invalid initialTotalDue (e.g. 0), repair it from server/pool data.
+      if (this.srsSession && (!Number.isFinite(Number(this.srsSession.initialTotalDue)) || Number(this.srsSession.initialTotalDue) <= 0)) {
+        const repairedTotal = Number.isFinite(Number(this.srsServerTotalDue)) && Number(this.srsServerTotalDue) > 0 ? Number(this.srsServerTotalDue) : dueIds.length;
+        try { console.debug('[VocabPracticeDialog] repair srsSession.initialTotalDue', { before: this.srsSession.initialTotalDue, repairedTotal }); } catch (_) {}
+        this.srsSession.initialTotalDue = repairedTotal;
+        this.srsSession.initialDueIds = Array.isArray(this.srsSession.initialDueIds) && this.srsSession.initialDueIds.length ? this.srsSession.initialDueIds : dueIds;
+        try { this.saveSrsSession(); } catch (_) {}
+      }
+
       const doneSet = new Set(Array.isArray(this.srsSession.doneIds) ? this.srsSession.doneIds : []);
       this.srsQueueIds = dueIds.filter((id) => !doneSet.has(id));
       try {