Fixed offset

src/editor/components/datevisibilityinput.tsx

@@ -34,7 +34,7 @@ function DateVisibilityInput({ date, onDateChange }: DateVisibilityInputProps) {
         return (
             date.getFullYear() +
             "-" +
-            date.getMonth().toString().padStart(2, "0") +
+            (date.getMonth() + 1).toString().padStart(2, "0") +
             "-" +
             date.getDate().toString().padStart(2, "0")
         );