Michael Sumner

<blockquote>
Does one thing: disables the Widget Block Editor feature.
</blockquote>
Activate this plugin to disable the Widget Block Editor functionality (added in WP version 5.8). To re-enable the widget block editor at any time, simply deactivate the plugin.
Features
<ul>
<li>Simple to use – activate and done.</li>
<li>No permanent modifications are performed.</li>
<li>There are no configuration options to worry about.</li>
<li>Easy peasy.</li>
</ul>
Why is this useful?
WordPress 5.8 was launched on July 20, 2021, and contained some enhancements to the WordPress block editor. Among those features was an introduction to WordPress’s new Widget Block Editor.
Now, why would you want to deactivate this function in the first place? You may have script conflicts that prevent you from using the widgets due to the block editor and conflicts with other plugins.
Privacy
This plugin does not collect or store any information about the user. It does not use cookies or link to any third-party websites. Thus, this plugin has no effect on the user’s privacy.

Disable Widget Block Editor

Activate this plugin to disable the Widget Block Editor feature that was added in WP v5.8.

p4wparamjeet

Default Classic Editor is a plugin maintained by the paramjeet that restores the previous (“classic”) WordPress editor and the “Edit Post” screen. It makes it possible to use plugins that extend that screen, add old-style meta boxes, or otherwise depend on the previous editor.
Default Classic Editor is a WordPress plugin, and will be fully supported and maintained until at least 2022, or as long as is necessary.
At a glance, this plugin adds the following:
<ul>
<li>Administrators can select the default editor for all users.</li>
<li>Administrators can allow users to change their default editor.</li>
<li>When allowed, the users can choose which editor to use for each post.</li>
<li>Each post opens in the last editor used regardless of who edited it last. This is important for maintaining a consistent experience when editing content.</li>
</ul>
In addition, the Default Classic Editor plugin includes several filters that let other plugins control the settings, and the editor choice per post and per post type.
By default, this plugin hides all functionality available in the new Block Editor (“Gutenberg”).

Default Classic Editor

Enables the previous "classic" editor and the old-style Edit Post screen with TinyMCE, Meta Boxes, etc. Supports all plugins that extend thi …

Disable Widget Block Editor vs Default Classic Editor