Templates - Addons not loading on products

When making a template with a product that has enabled addons, be it mandatory or optional, these addons do not load when using a template on a fresh new quote.

If you click on "Add additional product add-ons" button, it will show you all the addons, including any that are turned on by default, but it won't let you save. So to add them to the quote, you have to toggle them off and on again to be added.