Twig filter Function is getting different entity object instead of null

That may be what Twig does when there are null pointers on objects. I would consult Twig’s documentation.

thanks cilefen. Do you have link to documentation around this twig filter stuff?

Twig syntax is documented here: https://twig.symfony.com/doc/3.x/templates.html

I guess the problem is in the template itself

1. I have added a taxonomy reference field (field_taxonomy_ref) in article content type.
2. Then in node--article.html.twig file I print {{ dump(node.field_taxonomy_ref.entity) }}, Which returns taxonomy entity object when there is data in this field but when this field is left empty then I am getting node object.

what is the proper method to get the reference entity object in node template. so that when there is no data in field reference then I will get null instead of node object.