Hello,

It is our mistake after the 4.0.4 update. This button shouldn’t be there.
Add the following line to the file

woodmart/inc/integrations/woocommerce/modules/quick-view.php

as shown on the screenshot http://prntscr.com/owj6jj

remove_action( 'woocommerce_single_product_summary', array( XTS\WC_Wishlist\UI::get_instance(), 'add_to_wishlist_single_btn' ), 33 );

Kind Regards
XTemos Studio