pinned: true does not seem to work

[gopalagrawal]

Have 3 posts under contents/posts/. Example:

contents/posts
  \__ foo/index.md
  \__ bar/index.md
  \__ baz/index.md

In one of the index.md, I have:

---
title: "bar"
pinned: true
date: 2020-08-16T17:40:35+05:30
draft: true
---

This does not make the bar post float to the top. Isn't that the expected behavior?