HTML in product titles, not working anymore

When a product is sold out, i normally want to show “UDSOLGT”, before the visitor goes to the product. Like this: https://skole-leg.dk/vare-kategori/alle-varer/beklaedning/

But now it still works in the search and categories, but when you come to the product, the title shows the HTML as code??? as seen here https://skole-leg.dk/produkt/sengetoej-pokemon/

And the same problem is in the pro version of Shopical, used here: https://spanskevine.dk/butik/cepas-viejas-reserva-vinos-jeromin-madrid/

Anyone have an solution, why the HTML no longer shows on the products??

The page I need help with: [log in to see the link]