diff --git a/wp-includes/media-template.php b/wp-includes/media-template.php
index 0a07b5619f..1f69382f12 100644
--- a/wp-includes/media-template.php
+++ b/wp-includes/media-template.php
@@ -536,7 +536,7 @@ function wp_print_media_templates() {
 			<div class="thumbnail">
 				<# if ( data.uploading ) { #>
 					<div class="media-progress-bar"><div style="width: {{ data.percent }}%"></div></div>
-				<# } else if ( 'image' === data.type && data.sizes ) { #>
+				<# } else if ( 'image' === data.type && data.size && data.size.url ) { #>
 					<div class="centered">
 						<img src="{{ data.size.url }}" draggable="false" alt="" />
 					</div>
@@ -598,7 +598,7 @@ function wp_print_media_templates() {
 			<div class="thumbnail thumbnail-{{ data.type }}">
 				<# if ( data.uploading ) { #>
 					<div class="media-progress-bar"><div></div></div>
-				<# } else if ( 'image' === data.type && data.sizes ) { #>
+				<# } else if ( 'image' === data.type && data.size && data.size.url ) { #>
 					<img src="{{ data.size.url }}" draggable="false" alt="" />
 				<# } else { #>
 					<img src="{{ data.icon }}" class="icon" draggable="false" alt="" />
diff --git a/wp-includes/media.php b/wp-includes/media.php
index e1091b9d8e..9dfc8b0b69 100644
--- a/wp-includes/media.php
+++ b/wp-includes/media.php
@@ -2406,8 +2406,8 @@ function gallery_shortcode( $attr ) {
 function wp_underscore_playlist_templates() {
 	?>
 <script type="text/html" id="tmpl-wp-playlist-current-item">
-	<# if ( data.image ) { #>
-	<img src="{{ data.thumb.src }}" alt="" />
+	<# if ( data.thumb && data.thumb.src ) { #>
+		<img src="{{ data.thumb.src }}" alt="" />
 	<# } #>
 	<div class="wp-playlist-caption">
 		<span class="wp-playlist-item-meta wp-playlist-item-title">
diff --git a/wp-includes/version.php b/wp-includes/version.php
index dbbbed5f12..f715bdbede 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.6-alpha-49011';
+$wp_version = '5.6-alpha-49012';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.