Mini Cart is not updating

Hello Team,
I have been struggling to fix the mini-cart auto refresh issue.

Scenario:
When a specific product is added (https://staging.wanderlust.com.au/product/wanderlust-dandelion/) and a coupon (mindgut) is applied, it will add a new product with 100% discount (like on screenshot: https://ibb.co/64x8STK) which works fine.

But if remove the parent product, it won’t remove the free product from the mini-cart (ONLY FROM mini-cart), but if you go to checkout/cart, its been removed, only the mini-cart is not refreshed.

I have tested by disabling all plugins, only using, ‘wooCommerce’, ‘WooCommerce Cart All in One’ and ‘smart coupon’ plugin but it won’t work, I have changed the theme and tried with default 2022 WordPress theme, it does not work. Can you please provide us some suggestion to make it work with your plugin and in future you can publish the updated one. For now, can you suggest us, how we shall fix it?

Any help will be appreciated mate.

Thank you

Best Regards
Deb