Tags are not being saved when using django-parler

Question

I am using django-parler for translation and django-taggit for adding tags. But when I add tags inside translation field (because of using in multiple language) tags are not being saved in admin page.
models.py

class News(models.Model):
    translations = TranslatedFields(
        title=models.CharField(max_length=255),
        content=RichTextUploadingField(),
        tags=TaggableManager(),
        slug=models.SlugField(max_length=255, db_index=True),
    )
    category = models.ForeignKey(Category)