diff --git a/packages/edit-post/src/deprecated.js b/packages/edit-post/src/deprecated.js
index 8d24a51aeb3d8..0e736cb2459ea 100644
--- a/packages/edit-post/src/deprecated.js
+++ b/packages/edit-post/src/deprecated.js
@@ -12,6 +12,7 @@ import {
 	PluginSidebar as EditorPluginSidebar,
 	PluginSidebarMoreMenuItem as EditorPluginSidebarMoreMenuItem,
 } from '@wordpress/editor';
+import { getPath } from '@wordpress/url';
 import deprecated from '@wordpress/deprecated';
 
 /**
@@ -20,6 +21,10 @@ import deprecated from '@wordpress/deprecated';
 import { unlock } from './lock-unlock';
 const { PluginPostExcerpt } = unlock( editorPrivateApis );
 
+const isSiteEditor = getPath( window.location.href )?.includes(
+	'site-editor.php'
+);
+
 const deprecateSlot = ( name ) => {
 	deprecated( `wp.editPost.${ name }`, {
 		since: '6.6',
@@ -32,6 +37,9 @@ const deprecateSlot = ( name ) => {
  * @see PluginBlockSettingsMenuItem in @wordpress/editor package.
  */
 export function PluginBlockSettingsMenuItem( props ) {
+	if ( isSiteEditor ) {
+		return null;
+	}
 	deprecateSlot( 'PluginBlockSettingsMenuItem' );
 	return <EditorPluginBlockSettingsMenuItem { ...props } />;
 }
@@ -40,6 +48,9 @@ export function PluginBlockSettingsMenuItem( props ) {
  * @see PluginDocumentSettingPanel in @wordpress/editor package.
  */
 export function PluginDocumentSettingPanel( props ) {
+	if ( isSiteEditor ) {
+		return null;
+	}
 	deprecateSlot( 'PluginDocumentSettingPanel' );
 	return <EditorPluginDocumentSettingPanel { ...props } />;
 }
@@ -48,6 +59,9 @@ export function PluginDocumentSettingPanel( props ) {
  * @see PluginMoreMenuItem in @wordpress/editor package.
  */
 export function PluginMoreMenuItem( props ) {
+	if ( isSiteEditor ) {
+		return null;
+	}
 	deprecateSlot( 'PluginMoreMenuItem' );
 	return <EditorPluginMoreMenuItem { ...props } />;
 }
@@ -56,6 +70,9 @@ export function PluginMoreMenuItem( props ) {
  * @see PluginPrePublishPanel in @wordpress/editor package.
  */
 export function PluginPrePublishPanel( props ) {
+	if ( isSiteEditor ) {
+		return null;
+	}
 	deprecateSlot( 'PluginPrePublishPanel' );
 	return <EditorPluginPrePublishPanel { ...props } />;
 }
@@ -64,6 +81,9 @@ export function PluginPrePublishPanel( props ) {
  * @see PluginPostPublishPanel in @wordpress/editor package.
  */
 export function PluginPostPublishPanel( props ) {
+	if ( isSiteEditor ) {
+		return null;
+	}
 	deprecateSlot( 'PluginPostPublishPanel' );
 	return <EditorPluginPostPublishPanel { ...props } />;
 }
@@ -72,6 +92,9 @@ export function PluginPostPublishPanel( props ) {
  * @see PluginPostStatusInfo in @wordpress/editor package.
  */
 export function PluginPostStatusInfo( props ) {
+	if ( isSiteEditor ) {
+		return null;
+	}
 	deprecateSlot( 'PluginPostStatusInfo' );
 	return <EditorPluginPostStatusInfo { ...props } />;
 }
@@ -80,6 +103,9 @@ export function PluginPostStatusInfo( props ) {
  * @see PluginSidebar in @wordpress/editor package.
  */
 export function PluginSidebar( props ) {
+	if ( isSiteEditor ) {
+		return null;
+	}
 	deprecateSlot( 'PluginSidebar' );
 	return <EditorPluginSidebar { ...props } />;
 }
@@ -88,6 +114,9 @@ export function PluginSidebar( props ) {
  * @see PluginSidebarMoreMenuItem in @wordpress/editor package.
  */
 export function PluginSidebarMoreMenuItem( props ) {
+	if ( isSiteEditor ) {
+		return null;
+	}
 	deprecateSlot( 'PluginSidebarMoreMenuItem' );
 	return <EditorPluginSidebarMoreMenuItem { ...props } />;
 }
@@ -96,6 +125,9 @@ export function PluginSidebarMoreMenuItem( props ) {
  * @see PluginPostExcerpt in @wordpress/editor package.
  */
 export function __experimentalPluginPostExcerpt() {
+	if ( isSiteEditor ) {
+		return null;
+	}
 	deprecated( 'wp.editPost.__experimentalPluginPostExcerpt', {
 		since: '6.6',
 		hint: 'Core and custom panels can be access programmatically using their panel name.',
diff --git a/packages/edit-site/src/deprecated.js b/packages/edit-site/src/deprecated.js
index 446ac1860989a..40c8a257ee7d4 100644
--- a/packages/edit-site/src/deprecated.js
+++ b/packages/edit-site/src/deprecated.js
@@ -6,8 +6,13 @@ import {
 	PluginSidebar as EditorPluginSidebar,
 	PluginSidebarMoreMenuItem as EditorPluginSidebarMoreMenuItem,
 } from '@wordpress/editor';
+import { getPath } from '@wordpress/url';
 import deprecated from '@wordpress/deprecated';
 
+const isSiteEditor = getPath( window.location.href )?.includes(
+	'site-editor.php'
+);
+
 const deprecateSlot = ( name ) => {
 	deprecated( `wp.editPost.${ name }`, {
 		since: '6.6',
@@ -20,6 +25,9 @@ const deprecateSlot = ( name ) => {
  * @see PluginMoreMenuItem in @wordpress/editor package.
  */
 export function PluginMoreMenuItem( props ) {
+	if ( ! isSiteEditor ) {
+		return null;
+	}
 	deprecateSlot( 'PluginMoreMenuItem' );
 	return <EditorPluginMoreMenuItem { ...props } />;
 }
@@ -28,6 +36,9 @@ export function PluginMoreMenuItem( props ) {
  * @see PluginSidebar in @wordpress/editor package.
  */
 export function PluginSidebar( props ) {
+	if ( ! isSiteEditor ) {
+		return null;
+	}
 	deprecateSlot( 'PluginSidebar' );
 	return <EditorPluginSidebar { ...props } />;
 }
@@ -36,6 +47,9 @@ export function PluginSidebar( props ) {
  * @see PluginSidebarMoreMenuItem in @wordpress/editor package.
  */
 export function PluginSidebarMoreMenuItem( props ) {
+	if ( ! isSiteEditor ) {
+		return null;
+	}
 	deprecateSlot( 'PluginSidebarMoreMenuItem' );
 	return <EditorPluginSidebarMoreMenuItem { ...props } />;
 }