diff --git a/wp-content/themes/twentyfifteen/inc/template-tags.php b/wp-content/themes/twentyfifteen/inc/template-tags.php
index fb6004ec38..f4de1d58bf 100644
--- a/wp-content/themes/twentyfifteen/inc/template-tags.php
+++ b/wp-content/themes/twentyfifteen/inc/template-tags.php
@@ -150,7 +150,7 @@ function twentyfifteen_categorized_blog() {
 		set_transient( 'twentyfifteen_categories', $all_the_cool_cats );
 	}
 
-	if ( $all_the_cool_cats > 1 ) {
+	if ( $all_the_cool_cats > 1 || is_preview() ) {
 		// This blog has more than 1 category so twentyfifteen_categorized_blog should return true.
 		return true;
 	} else {
diff --git a/wp-content/themes/twentyfourteen/inc/template-tags.php b/wp-content/themes/twentyfourteen/inc/template-tags.php
index f63ee8284b..1d35d0d5b9 100644
--- a/wp-content/themes/twentyfourteen/inc/template-tags.php
+++ b/wp-content/themes/twentyfourteen/inc/template-tags.php
@@ -140,7 +140,7 @@ function twentyfourteen_categorized_blog() {
 		set_transient( 'twentyfourteen_category_count', $all_the_cool_cats );
 	}
 
-	if ( 1 !== (int) $all_the_cool_cats ) {
+	if ( $all_the_cool_cats > 1 || is_preview() ) {
 		// This blog has more than 1 category so twentyfourteen_categorized_blog should return true
 		return true;
 	} else {
diff --git a/wp-content/themes/twentyseventeen/inc/template-tags.php b/wp-content/themes/twentyseventeen/inc/template-tags.php
index f94e3c9c87..782a81fe3b 100644
--- a/wp-content/themes/twentyseventeen/inc/template-tags.php
+++ b/wp-content/themes/twentyseventeen/inc/template-tags.php
@@ -177,6 +177,11 @@ function twentyseventeen_categorized_blog() {
 		set_transient( 'twentyseventeen_categories', $category_count );
 	}
 
+	// Allow viewing case of 0 or 1 categories in post preview.
+	if ( is_preview() ) {
+		return true;
+	}
+
 	return $category_count > 1;
 }
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index d2fc2db28a..23acf20f9e 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.8-alpha-40022';
+$wp_version = '4.8-alpha-40023';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.