diff --git a/packages/block-library/src/post-content/index.php b/packages/block-library/src/post-content/index.php
index 400e3068dfa0a9..7edb2cd604a719 100644
--- a/packages/block-library/src/post-content/index.php
+++ b/packages/block-library/src/post-content/index.php
@@ -36,11 +36,16 @@ function render_block_core_post_content( $attributes, $content, $block ) {
 
 	$seen_ids[ $post_id ] = true;
 
+	// Check is needed for backward compatibility with third-party plugins
+	// that might rely on the `in_the_loop` check; calling `the_post` sets it to true.
 	if ( ! in_the_loop() && have_posts() ) {
 		the_post();
 	}
 
-	$content = get_the_content( null, false, $post_id );
+	// When inside the main loop, we want to use queried object
+	// so that `the_preview` for the current post can apply.
+	// We force this behavior by omitting the third argument (post ID) from the `get_the_content`.
+	$content = get_the_content( null, false );
 	/** This filter is documented in wp-includes/post-template.php */
 	$content = apply_filters( 'the_content', str_replace( ']]>', ']]>', $content ) );
 	unset( $seen_ids[ $post_id ] );
diff --git a/packages/block-library/src/post-title/index.php b/packages/block-library/src/post-title/index.php
index 61618939cec9dd..56302864265165 100644
--- a/packages/block-library/src/post-title/index.php
+++ b/packages/block-library/src/post-title/index.php
@@ -20,7 +20,7 @@ function render_block_core_post_title( $attributes, $content, $block ) {
 	}
 
 	$post_ID = $block->context['postId'];
-	$title   = get_the_title( $post_ID );
+	$title   = get_the_title();
 
 	if ( ! $title ) {
 		return '';