Disable Gutenberg editor and bring back the old classic WordPress post editor.

Вибачте цей текст доступний тільки в “англійська і “російська”.

After updating WordPress to the latest version (5.0 at the time of writing the post), the interface for working with posts was radically updated – the editor Gutenberg appeared.

My subjective opinion: the new editor Gutenberg is raw, inconvenient and has many conflicts. For example,  the client sites use the qTranslate X plugin often. This plugin refuses to work with the new WordPress post editor at all – below is an example screenshot from the admin panel:

And here you can see the TinyMCE posts editor which we used before:

As you can see, qTranslate X and other possible plug-ins successfully work with it, which our clients are used to work with!

To resolve this issue, simply install the following plugin:

https://wordpress.org/plugins/disable-gutenberg/

It returns the classic editor and as it`s stated in the description of the plugin itself:
Restores the original Edit Post screen (TinyMCE, meta boxes, et al).