The wishlist page should contain [yith_wcwl_wishlist] shortcode only https://www.8theme.com/demo/docs/legenda/Troubleshooting/WishList
but your page – http://prntscr.com/pi93ec Have you added this code manually?
I’ve edited the wishlist page http://prntscr.com/pi9469 > http://prntscr.com/pi948f = http://prntscr.com/pi94bt
Also, I’ve disabled the Gutenberg Editor – https://www.8theme.com/demo/docs/legenda/Plugins/WPBakery_Page_Builder
Please clear all cache and check if the problem was solved.
Regards