WordPress doesn’t send a password (but only a username) after new user registrat

Have a deep look at the link

Hi [username],

Thanks for registering on [www.example.com] Your account is now active.

To login please fill out your credentials on:
https://www.example.com/login/

Your Username: [username]

Have a nice day!

Wordpress send the link when you visit that link, there you can set up the password.

What I got in demo:

Username: xxx

To set your password, visit the following address:

<http://example.com/wp-login.php?action=rp&key=xxxxxxxxxx&login=xxx&gt;

http://example.com/wp-login.php

Alternatively, while adding new user form. Hit the button Show Password button and you can set the password or after adding you use editing option to override any password.