diff --git a/src/main.ts b/src/main.ts
index 59c9696..f8253ee 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -2895,6 +2895,8 @@ async function processOneQueueItem(item: QueueItem): Promise<void> {
     } finally {
         activeDownloads.delete(item.id);
         cancelledItemIds.delete(item.id);
+        // Release any filenames claimed during this download (prevents stale claims blocking re-downloads)
+        claimedFilenames.clear();
     }
 }
 
diff --git a/src/renderer-queue.ts b/src/renderer-queue.ts
index 71016ed..1fbee86 100644
--- a/src/renderer-queue.ts
+++ b/src/renderer-queue.ts
@@ -221,7 +221,10 @@ function initQueueDragDrop(): void {
         if (itemId) {
             const item = queue.find(i => i.id === itemId);
             if (!item || item.status !== 'pending') {
-                e.preventDefault();
+                if (e.dataTransfer) {
+                    e.dataTransfer.effectAllowed = 'none';
+                    e.dataTransfer.clearData();
+                }
                 return;
             }
         }