Update index.html

index.html

@@ -565,6 +565,7 @@ document.getElementById("edit-next-marker").addEventListener("click", function (
       document.getElementById("delete-marker").addEventListener("click", function() {
     if (confirm("本当に削除しますか？")) {
         map.removeLayer(editingMarker);
+        editingMarker=false;
         document.getElementById("marker-editor").style.display = "none";
         saveMapToStorage();
     }