diff --git a/src/wp-includes/block-template-utils.php b/src/wp-includes/block-template-utils.php
index 2d23f8545e87f..d17aa174398e3 100644
--- a/src/wp-includes/block-template-utils.php
+++ b/src/wp-includes/block-template-utils.php
@@ -729,7 +729,8 @@ function _wp_build_title_and_description_for_single_post_type_block_template( $p
 	);
 
 	$args = array(
-		'title' => $post_title,
+		'title'          => $post_title,
+		'posts_per_page' => 2,
 	);
 	$args = wp_parse_args( $args, $default_args );
 
diff --git a/tests/phpunit/tests/block-templates/buildBlockTemplateResultFromPost.php b/tests/phpunit/tests/block-templates/buildBlockTemplateResultFromPost.php
index 5dbf91d911f07..05bd88bcd24dd 100644
--- a/tests/phpunit/tests/block-templates/buildBlockTemplateResultFromPost.php
+++ b/tests/phpunit/tests/block-templates/buildBlockTemplateResultFromPost.php
@@ -176,6 +176,191 @@ public function test_should_not_inject_ignored_hooked_block_into_template() {
 		$this->assertStringNotContainsString( '<!-- wp:tests/ignored /-->', $template->content );
 	}
 
+	/**
+	 * @ticket 65966
+	 */
+	public function test_should_append_post_slug_to_title_when_posts_share_the_same_title() {
+		self::factory()->post->create(
+			array(
+				'post_title' => 'Same Title',
+				'post_name'  => 'first-post',
+			)
+		);
+		self::factory()->post->create(
+			array(
+				'post_title' => 'Same Title',
+				'post_name'  => 'second-post',
+			)
+		);
+
+		$first_template_post = self::factory()->post->create_and_get(
+			array(
+				'post_type'    => 'wp_template',
+				'post_name'    => 'single-post-first-post',
+				'post_title'   => 'single-post-first-post',
+				'post_content' => 'Content',
+				'post_excerpt' => '',
+				'tax_input'    => array(
+					'wp_theme' => array(
+						self::TEST_THEME,
+					),
+				),
+			)
+		);
+		wp_set_post_terms( $first_template_post->ID, self::TEST_THEME, 'wp_theme' );
+
+		$second_template_post = self::factory()->post->create_and_get(
+			array(
+				'post_type'    => 'wp_template',
+				'post_name'    => 'single-post-second-post',
+				'post_title'   => 'single-post-second-post',
+				'post_content' => 'Content',
+				'post_excerpt' => '',
+				'tax_input'    => array(
+					'wp_theme' => array(
+						self::TEST_THEME,
+					),
+				),
+			)
+		);
+		wp_set_post_terms( $second_template_post->ID, self::TEST_THEME, 'wp_theme' );
+
+		$first_template  = _build_block_template_result_from_post( $first_template_post );
+		$second_template = _build_block_template_result_from_post( $second_template_post );
+
+		$this->assertNotWPError( $first_template, 'Building the template for the first post should not return an error.' );
+		$this->assertSame( 'Post: Same Title (first-post)', $first_template->title, 'The title of the first post template should be suffixed with the post slug.' );
+		$this->assertNotWPError( $second_template, 'Building the template for the second post should not return an error.' );
+		$this->assertSame( 'Post: Same Title (second-post)', $second_template->title, 'The title of the second post template should be suffixed with the post slug.' );
+	}
+
+	/**
+	 * @ticket 65966
+	 */
+	public function test_should_not_append_post_slug_to_title_when_post_title_is_unique() {
+		self::factory()->post->create(
+			array(
+				'post_title' => 'Unique Title',
+				'post_name'  => 'unique-post',
+			)
+		);
+
+		$template_post = self::factory()->post->create_and_get(
+			array(
+				'post_type'    => 'wp_template',
+				'post_name'    => 'single-post-unique-post',
+				'post_title'   => 'single-post-unique-post',
+				'post_content' => 'Content',
+				'post_excerpt' => '',
+				'tax_input'    => array(
+					'wp_theme' => array(
+						self::TEST_THEME,
+					),
+				),
+			)
+		);
+		wp_set_post_terms( $template_post->ID, self::TEST_THEME, 'wp_theme' );
+
+		$template = _build_block_template_result_from_post( $template_post );
+
+		$this->assertNotWPError( $template, 'Building the template should not return an error.' );
+		$this->assertSame( 'Post: Unique Title', $template->title, 'The template title should not be suffixed with the post slug when the post title is unique.' );
+	}
+
+	/**
+	 * @ticket 65966
+	 */
+	public function test_should_append_term_slug_to_title_when_terms_share_the_same_name() {
+		self::factory()->term->create(
+			array(
+				'taxonomy' => 'post_tag',
+				'name'     => 'Same Name',
+				'slug'     => 'first-tag',
+			)
+		);
+		self::factory()->term->create(
+			array(
+				'taxonomy' => 'post_tag',
+				'name'     => 'Same Name',
+				'slug'     => 'second-tag',
+			)
+		);
+
+		$first_template_post = self::factory()->post->create_and_get(
+			array(
+				'post_type'    => 'wp_template',
+				'post_name'    => 'tag-first-tag',
+				'post_title'   => 'tag-first-tag',
+				'post_content' => 'Content',
+				'post_excerpt' => '',
+				'tax_input'    => array(
+					'wp_theme' => array(
+						self::TEST_THEME,
+					),
+				),
+			)
+		);
+		wp_set_post_terms( $first_template_post->ID, self::TEST_THEME, 'wp_theme' );
+
+		$second_template_post = self::factory()->post->create_and_get(
+			array(
+				'post_type'    => 'wp_template',
+				'post_name'    => 'tag-second-tag',
+				'post_title'   => 'tag-second-tag',
+				'post_content' => 'Content',
+				'post_excerpt' => '',
+				'tax_input'    => array(
+					'wp_theme' => array(
+						self::TEST_THEME,
+					),
+				),
+			)
+		);
+		wp_set_post_terms( $second_template_post->ID, self::TEST_THEME, 'wp_theme' );
+
+		$first_template  = _build_block_template_result_from_post( $first_template_post );
+		$second_template = _build_block_template_result_from_post( $second_template_post );
+
+		$this->assertNotWPError( $first_template, 'Building the template for the first term should not return an error.' );
+		$this->assertSame( 'Tag: Same Name (first-tag)', $first_template->title, 'The title of the first term template should be suffixed with the term slug.' );
+		$this->assertNotWPError( $second_template, 'Building the template for the second term should not return an error.' );
+		$this->assertSame( 'Tag: Same Name (second-tag)', $second_template->title, 'The title of the second term template should be suffixed with the term slug.' );
+	}
+
+	/**
+	 * @ticket 65966
+	 */
+	public function test_should_not_append_term_slug_to_title_when_term_name_is_unique() {
+		self::factory()->term->create(
+			array(
+				'taxonomy' => 'category',
+				'name'     => 'Unique Category',
+				'slug'     => 'unique-category',
+			)
+		);
+
+		$template_post = self::factory()->post->create_and_get(
+			array(
+				'post_type'    => 'wp_template',
+				'post_name'    => 'category-unique-category',
+				'post_title'   => 'category-unique-category',
+				'post_content' => 'Content',
+				'post_excerpt' => '',
+				'tax_input'    => array(
+					'wp_theme' => array(
+						self::TEST_THEME,
+					),
+				),
+			)
+		);
+		wp_set_post_terms( $template_post->ID, self::TEST_THEME, 'wp_theme' );
+
+		$template = _build_block_template_result_from_post( $template_post );
+
+		$this->assertNotWPError( $template, 'Building the template should not return an error.' );
+		$this->assertSame( 'Category: Unique Category', $template->title, 'The template title should not be suffixed with the term slug when the term name is unique.' );
+	}
+
 	/**
 	 * @ticket 59646
 	 * @ticket 60506