Hello Javito,
Thank you for reaching out to us with your concerns.
1/ Theme Options > WooCommerce > Shop elements > Quick view > Elements.
2/ The product description contains tags, and when a part of the excerpt is taken to show in Quick View, some unclosed tags cause the problem.
There are 2 ways, you can set “”More Details” Length (Charts)” 999999999, in Theme Options > WooCommerce > Shop elements > Quick view OR disable More Details Link via Theme Options > WooCommerce > Shop elements > Quick view.
If you have any additional questions or concerns, please do not hesitate to reach out to us. Our support team is always available to assist you.
Best Regards,
8Theme’s Team