magento2 – sales_model_service_quote_submit_before in custom module

I am using sales_model_service_quote_submit_before in my custom module for adding quote additional_options to order item options its working fine but vendor/magento/module-quote/Model/QuoteManagement.php event is not working. Here is the piece of code which is not working in magento core class when I use this observer in my module.

            'order' => $order,
            'quote' => $quote

This is the event in my custom module

<event name="sales_model_service_quote_submit_before">
    <observer name="vendor_module_sales_model_service_quote_submit_before" instance="VendorModuleObserverSalesModelServiceQuoteSubmitBeforeObserver" />