Hello,
You use old theme version, so there are outdated files (WooCommerce > Status).
I would recommend you to update theme. If your site is live, it would be better to do the update on staging / dev site (a full copy of the existing site). You can try Duplicator plugin to make a copy.
This documentation will help you with theme updating – https://www.8theme.com/demo/docs/woopress/#!/installation_upgrade
Before uploading theme files delete “woocommerce” folder, which is located in wp-content/themes/woopress/ to avoid problems with old files (it will be reuploaded from a new theme package).
Do not forget to update all the required plugins https://www.8theme.com/download-plugins/
If you edited php files of theme, transfer changes into a child theme.
If you want to update everything on the production site without the staging site then do the backup of all the files and DB before the update. Then you’ll be able to restore backup if you face any critical error.
Also, compare content of products to find out why only some of the products have the problem with tabs.
Let us know result.
Regards