Michael Sumner

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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.

Devmont Digital

This lightweight plugin helps improve WordPress performance and security by disabling features you may not need:
<ul>
<li>📴 XML-RPC</li>
<li>😐 Emojis</li>
<li>📰 RSS Feeds</li>
<li>🧱 Gutenberg (Block Editor)</li>
<li>🔌 REST API</li>
<li>❤️ Heartbeat API</li>
</ul>
Features:
<ul>
<li>Toggle individual modules</li>
<li>Easy admin UI</li>
<li>No settings saved unless toggled</li>
<li>No impact on frontend styling or functionality unless explicitly disabled</li>
</ul>
Ideal for performance-focused builds, headless WordPress, or advanced users.

Disable Unused WP Features

Clean up WordPress by disabling rarely used features like XML-RPC, Emojis, RSS, Gutenberg, REST API, Heartbeat, and Dashicon all in one place.

Disable Widget Block Editor vs Disable Unused WP Features