Sorry. I should have been more specific.
I don’t think I have any instances of add_to_cart_fragments
in my version of WooCommerce which is up to date to the most current version, 3.8.1.
I haven’t looked through all the plugin files yet so I guess it could have that somewhere, but since WooCommerce seems to have already addressed that issue, I am wondering if there are any other known issues that might be causing my problem?