Hi,
and thank you for writing in!
To discover what exactly is causing this issue you should isolate the plugin behavior. To do this, please, try to deactivate all plugins, leaving only WooCommerce and YITH WooCommerce Quick View active, and see if the problem is solved. If so, try to activate them again, one by one, to see which one causes the issue.
If the problem isn’t caused by a plugin, try to activate a default WordPress theme (i.e:Twenty Twenty) and see if you have the same issue.
Also, if you have customized some files in your theme, please try with a fresh installation without any customization.
Furthermore, if not already enabled, please try to enable the WordPress Debug as explained here.
Please try this solution and let us know what’s the result.
