Error ‘row was updated or deleted by another transaction’ when using JPA with JBoss EAP

I’m encountering an issue where I can’t perform a second consecutive update on any field of a JSF form. The form initially loads with all fields disabled by default. There’s a ‘Modify’ button at the bottom of the form, which, when clicked, allows me to edit any field. However, as I mentioned, the first update works fine, but subsequent updates fail unless I navigate away from the page and then return.

Here is the portion of my Controller where I call the update. This is where the update operation is triggered:

 @Override
    public Personne modifierPersonne(Personne Personne, Adresse adresse) throws GererPersonneControllerException {
        verifierExistancePersonne(Personne);
        List<Adresse> adresses = Personne.getAdresses();
        if (adresse.getId() != null) {
            List<Long> ids = adresses.stream().map(Adresse::getId).collect(Collectors.toList());
            int index = ids.indexOf(adresse.getId());
            adresses.set(index, adresse);
            Personne.setAdresses(adresses);
        } else {
            AdresseDedale adresseDedale = new AdresseDedale();
            adresseDedale.setRue(adresse.getRue());
            adresseDedale.setCommune(adresse.getCommune());
            adresseDedale.setCodePostal(adresse.getCodePostal());
            adresse.setTypeAdresse(TYPE_ADRESSE.RESIDENCE.getCode());
            adresse.setAdresseDedale(adresseDedale);
            List<Adresse> adresses1 = new ArrayList<>();
            Adresse adresseTosave = adresseDap.create(adresse);
            adresses1.add(adresseTosave);
            Personne = PersonneDap.find(Personne.getId());
            Personne.setAdresses(adresses1);
        }
        try {
            return PersonneDap.update(Personne);
        } catch (PersistenceException e) {
            logException(e);
            
        }
    }

Here is the code responsible for performing the update:

@Transactional(Transactional.TxType.REQUIRED)
public T update(T entity) {
   
        return entityManager.merge(entity);
    
}