[AdminList] Form errors

[Danny v W]

Not all form errors are visible in an admin list. Validation for the name field is visible but the collection is not. The symfony toolbar shows the validation error for both fields. The same form type on a Node works.

final class FormType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options): void
    {
        $builder->add('name', TextType::class, [
            'required' => true,
        ]);

        $builder->add('tags', CollectionType::class, [
            'entry_type' => TextType::class,
            'entry_options' => [
                'constraints' => [
                    new NotBlank(),
                ],
            ],
            'allow_add' => true,
            'allow_delete' => true,
            'attr' => [
                'nested_form' => true,
                'nested_deletable' => false,
            ],
        ]);
    }
}