diff --git a/composer.json b/composer.json
index 88d0e8d58..a4dd940cd 100644
--- a/composer.json
+++ b/composer.json
@@ -60,7 +60,7 @@
 			"Yoast\\WP\\Duplicate_Post\\Config\\Composer\\Actions::check_coding_standards"
 		],
 		"check-cs-thresholds": [
-			"@putenv YOASTCS_THRESHOLD_ERRORS=69",
+			"@putenv YOASTCS_THRESHOLD_ERRORS=65",
 			"@putenv YOASTCS_THRESHOLD_WARNINGS=0",
 			"Yoast\\WP\\Duplicate_Post\\Config\\Composer\\Actions::check_cs_thresholds"
 		],
diff --git a/js/src/duplicate-post-edit-script.js b/js/src/duplicate-post-edit-script.js
index ccbb7645e..6d289f0f6 100644
--- a/js/src/duplicate-post-edit-script.js
+++ b/js/src/duplicate-post-edit-script.js
@@ -95,14 +95,13 @@ class DuplicatePost {
 			return;
 		}
 
-		for ( const [ key, notice ] of Object.entries( duplicatePostNotices ) ){
-			let noticeObj = JSON.parse( notice );
-			if ( noticeObj.status && noticeObj.text ) {
+		for ( const [ key, notice ] of Object.entries( duplicatePostNotices ) ) {
+			if ( notice.status && notice.text ) {
 				dispatch( 'core/notices' ).createNotice(
-					noticeObj.status,
-					noticeObj.text,
+					notice.status,
+					notice.text,
 					{
-						isDismissible: noticeObj.isDismissible || true,
+						isDismissible: notice.isDismissible || true,
 					}
 				);
 			}
diff --git a/src/watchers/copied-post-watcher.php b/src/watchers/copied-post-watcher.php
index 86550b482..bd79131a9 100644
--- a/src/watchers/copied-post-watcher.php
+++ b/src/watchers/copied-post-watcher.php
@@ -110,14 +110,14 @@ public function add_block_editor_notice() {
 		if ( $this->permissions_helper->has_rewrite_and_republish_copy( $post ) ) {
 
 			$notice = [
-				'text'          => \wp_slash( $this->get_notice_text( $post ) ),
+				'text'          => $this->get_notice_text( $post ),
 				'status'        => 'warning',
 				'isDismissible' => true,
 			];
 
 			\wp_add_inline_script(
 				'duplicate_post_edit_script',
-				"duplicatePostNotices.has_rewrite_and_republish_notice = '" . \wp_json_encode( $notice ) . "';",
+				'duplicatePostNotices.has_rewrite_and_republish_notice = ' . \wp_json_encode( $notice ) . ';',
 				'before'
 			);
 		}
diff --git a/src/watchers/link-actions-watcher.php b/src/watchers/link-actions-watcher.php
index d19b4dd69..94a2a24af 100644
--- a/src/watchers/link-actions-watcher.php
+++ b/src/watchers/link-actions-watcher.php
@@ -42,9 +42,9 @@ public function register_hooks() {
 	/**
 	 * Adds vars to the removable query args.
 	 *
-	 * @param array $removable_query_args Array of query args keys.
+	 * @param array<string> $removable_query_args Array of query args keys.
 	 *
-	 * @return array The updated array of query args keys.
+	 * @return array<string> The updated array of query args keys.
 	 */
 	public function add_removable_query_args( $removable_query_args ) {
 		if ( \is_array( $removable_query_args ) ) {
@@ -109,19 +109,18 @@ public function add_rewrite_and_republish_admin_notice() {
 	public function add_rewrite_and_republish_block_editor_notice() {
 		if ( ! empty( $_REQUEST['rewriting'] ) ) {
 			$notice = [
-				'text'          => \wp_slash(
+				'text'          =>
 					\__(
 						'You can now start rewriting your post in this duplicate of the original post. If you click "Republish", this rewritten post will replace the original post.',
 						'duplicate-post'
-					)
-				),
+					),
 				'status'        => 'warning',
 				'isDismissible' => true,
 			];
 
 			\wp_add_inline_script(
 				'duplicate_post_edit_script',
-				"duplicatePostNotices.rewriting_notice = '" . \wp_json_encode( $notice ) . "';",
+				'duplicatePostNotices.rewriting_notice = ' . \wp_json_encode( $notice ) . ';',
 				'before'
 			);
 		}
diff --git a/src/watchers/original-post-watcher.php b/src/watchers/original-post-watcher.php
index 7bba2cc97..d1293923b 100644
--- a/src/watchers/original-post-watcher.php
+++ b/src/watchers/original-post-watcher.php
@@ -92,14 +92,14 @@ public function add_block_editor_notice() {
 		if ( $this->permissions_helper->has_original_changed( $post ) ) {
 
 			$notice = [
-				'text'          => \wp_slash( $this->get_notice_text() ),
+				'text'          => $this->get_notice_text(),
 				'status'        => 'warning',
 				'isDismissible' => true,
 			];
 
 			\wp_add_inline_script(
 				'duplicate_post_edit_script',
-				"duplicatePostNotices.has_original_changed_notice = '" . \wp_json_encode( $notice ) . "';",
+				'duplicatePostNotices.has_original_changed_notice = ' . \wp_json_encode( $notice ) . ';',
 				'before'
 			);
 		}
diff --git a/src/watchers/republished-post-watcher.php b/src/watchers/republished-post-watcher.php
index 64908518c..41e0e3230 100644
--- a/src/watchers/republished-post-watcher.php
+++ b/src/watchers/republished-post-watcher.php
@@ -43,9 +43,9 @@ public function register_hooks() {
 	/**
 	 * Adds vars to the removable query args.
 	 *
-	 * @param array $removable_query_args Array of query args keys.
+	 * @param array<string> $removable_query_args Array of query args keys.
 	 *
-	 * @return array The updated array of query args keys.
+	 * @return array<string> The updated array of query args keys.
 	 */
 	public function add_removable_query_args( $removable_query_args ) {
 		if ( \is_array( $removable_query_args ) ) {
@@ -93,14 +93,14 @@ public function add_admin_notice() {
 	public function add_block_editor_notice() {
 		if ( ! empty( $_REQUEST['dprepublished'] ) ) {
 			$notice = [
-				'text'          => \wp_slash( $this->get_notice_text() ),
+				'text'          => $this->get_notice_text(),
 				'status'        => 'success',
 				'isDismissible' => true,
 			];
 
 			\wp_add_inline_script(
 				'duplicate_post_edit_script',
-				"duplicatePostNotices.republished_notice = '" . \wp_json_encode( $notice ) . "';",
+				'duplicatePostNotices.republished_notice = ' . \wp_json_encode( $notice ) . ';',
 				'before'
 			);
 		}
diff --git a/tests/Unit/Watchers/Copied_Post_Watcher_Test.php b/tests/Unit/Watchers/Copied_Post_Watcher_Test.php
index 7dae09e6b..273ee3ecf 100644
--- a/tests/Unit/Watchers/Copied_Post_Watcher_Test.php
+++ b/tests/Unit/Watchers/Copied_Post_Watcher_Test.php
@@ -277,7 +277,7 @@ public function test_add_block_editor_notice() {
 		Monkey\Functions\expect( '\wp_add_inline_script' )
 			->with(
 				'duplicate_post_edit_script',
-				"duplicatePostNotices.has_rewrite_and_republish_notice = '{\"text\":\"notice\",\"status\":\"warning\",\"isDismissible\":true}';",
+				'duplicatePostNotices.has_rewrite_and_republish_notice = {"text":"notice","status":"warning","isDismissible":true};',
 				'before'
 			);
 
diff --git a/tests/Unit/Watchers/Link_Actions_Watcher_Test.php b/tests/Unit/Watchers/Link_Actions_Watcher_Test.php
index 7229185ed..bffcdae76 100644
--- a/tests/Unit/Watchers/Link_Actions_Watcher_Test.php
+++ b/tests/Unit/Watchers/Link_Actions_Watcher_Test.php
@@ -263,7 +263,7 @@ public function test_add_rewrite_and_republish_block_editor_notice() {
 		Monkey\Functions\expect( '\wp_add_inline_script' )
 			->with(
 				'duplicate_post_edit_script',
-				"duplicatePostNotices.rewriting_notice = '{\"text\":\"You can now start rewriting your post in this duplicate of the original post. If you click \\\"Republish\\\", this rewritten post will replace the original post.\",\"status\":\"warning\",\"isDismissible\":true}';",
+				'duplicatePostNotices.rewriting_notice = {"text":"You can now start rewriting your post in this duplicate of the original post. If you click \"Republish\", this rewritten post will replace the original post.","status":"warning","isDismissible":true};',
 				'before'
 			);
 
diff --git a/tests/Unit/Watchers/Original_Post_Watcher_Test.php b/tests/Unit/Watchers/Original_Post_Watcher_Test.php
index d9a35eba4..a5a3236ca 100644
--- a/tests/Unit/Watchers/Original_Post_Watcher_Test.php
+++ b/tests/Unit/Watchers/Original_Post_Watcher_Test.php
@@ -200,7 +200,7 @@ public function test_add_block_editor_notice() {
 		Monkey\Functions\expect( '\wp_add_inline_script' )
 			->with(
 				'duplicate_post_edit_script',
-				"duplicatePostNotices.has_original_changed_notice = '{\"text\":\"notice\",\"status\":\"warning\",\"isDismissible\":true}';",
+				'duplicatePostNotices.has_original_changed_notice = {"text":"notice","status":"warning","isDismissible":true};',
 				'before'
 			);
 
diff --git a/tests/Unit/Watchers/Republished_Post_Watcher_Test.php b/tests/Unit/Watchers/Republished_Post_Watcher_Test.php
index 19b2a8a96..998de62b2 100644
--- a/tests/Unit/Watchers/Republished_Post_Watcher_Test.php
+++ b/tests/Unit/Watchers/Republished_Post_Watcher_Test.php
@@ -161,7 +161,7 @@ public function test_add_block_editor_notice() {
 		Monkey\Functions\expect( '\wp_add_inline_script' )
 			->with(
 				'duplicate_post_edit_script',
-				"duplicatePostNotices.republished_notice = '{\"text\":\"notice\",\"status\":\"success\",\"isDismissible\":true}';",
+				'duplicatePostNotices.republished_notice = {"text":"notice","status":"success","isDismissible":true};',
 				'before'
 			);