.
If you still haven't clicked "Post" or "Preview", and the browser crashed/PC shut down unexpectedly, there will be no draft for that particular post.
Drafts will be saved after you've clicked either of the two buttons.
Exactly, that is what some users incorrectly understood. Drafts will be saved in Draft page if users click on either of two buttons, Post, or Preview.
Some users think they have to click Preview, before clicking on Post to save their posts in Draft page.
If you click "preview" once, there will be an immediate backup of the current version of you post (good as backup).
And another backup of the final version after clicking "post".
This is what I did not think of. Thank you.