diff --git a/wp-includes/embed.php b/wp-includes/embed.php
index 915314a767..33d7d8b832 100644
--- a/wp-includes/embed.php
+++ b/wp-includes/embed.php
@@ -966,7 +966,7 @@ function wp_filter_oembed_result( $result, $data, $url ) {
 
 	if ( ! empty( $content[1] ) ) {
 		// We have a blockquote to fall back on. Hide the iframe by default.
-		$html = str_replace( '<iframe', '<iframe style="position: absolute; clip: rect(1px, 1px, 1px, 1px);"', $html );
+		$html = str_replace( '<iframe', '<iframe style="position: absolute; visibility: hidden;"', $html );
 		$html = str_replace( '<blockquote', '<blockquote class="wp-embedded-content"', $html );
 	}
 
@@ -1099,7 +1099,13 @@ function print_embed_scripts() {
  * @return string The filtered content.
  */
 function _oembed_filter_feed_content( $content ) {
-	return str_replace( '<iframe class="wp-embedded-content" sandbox="allow-scripts" security="restricted" style="position: absolute; clip: rect(1px, 1px, 1px, 1px);"', '<iframe class="wp-embedded-content" sandbox="allow-scripts" security="restricted"', $content );
+	$p = new WP_HTML_Tag_Processor( $content );
+	while ( $p->next_tag( array( 'tag_name' => 'iframe' ) ) ) {
+		if ( $p->has_class( 'wp-embedded-content' ) ) {
+			$p->remove_attribute( 'style' );
+		}
+	}
+	return $p->get_updated_html();
 }
 
 /**
diff --git a/wp-includes/media.php b/wp-includes/media.php
index c960e44c46..1c2a257c5b 100644
--- a/wp-includes/media.php
+++ b/wp-includes/media.php
@@ -2197,14 +2197,6 @@ function wp_img_tag_add_srcset_and_sizes_attr( $image, $context, $attachment_id
  * @return string Converted `iframe` tag with `loading` attribute added.
  */
 function wp_iframe_tag_add_loading_attr( $iframe, $context ) {
-	/*
-	 * Iframes with fallback content (see `wp_filter_oembed_result()`) should not be lazy-loaded because they are
-	 * visually hidden initially.
-	 */
-	if ( str_contains( $iframe, ' data-secret="' ) ) {
-		return $iframe;
-	}
-
 	/*
 	 * Get loading attribute value to use. This must occur before the conditional check below so that even iframes that
 	 * are ineligible for being lazy-loaded are considered.
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 7d95dce5fa..0982c86769 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.6-alpha-58142';
+$wp_version = '6.6-alpha-58143';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.