Hello there,
That is definitely related to the theme or some other plugins.
I see you already tried to disable plugins that are related to products. Please, try to disable all of them, except WooCommerce.
Also, if it still happens after that, try switching the theme to Storefront: https://woocommerce.com/storefront/?aff=10486&cid=1131038
We haven’t heard back from you in a while, so I’m going to mark this as resolved – if you have any further questions, you can start a new thread.