They need to have a vet reference and demonstrate that they will be coachable about the situation. It really depends on the dog.
This may seem over the top but an animal rescue group has got the interests of the dog in mind, and if that’s inconvenient to the potential adopters, then they don’t get the dog.
The animals are temperment tested in shelters before being adopted. And in most cases, the animals have resided in foster homes where they have been exposed and lived with so problems would be found then.
If the people know a lot about the breed, and are responsible, will shelters/breeders let them be adopted?