How do I get the short link button back in WordPress?

Previously, including WordPress version 4.4, there was a Get Shortlink button in the basic functionality of WordPress, which was extremely convenient to use in messengers, emails, newsletters, and much more.

However, at the moment, the latest versions of WP do not allow using this functionality. The plugin Bring Back the Get Shortlink Button, which is an open-source solution, solves this issue. Of course, you can solve the problem using other methods, but the one described above is as simple as possible for the site owners who are not developers.