diff --git a/src/wp-admin/css/customize-controls.css b/src/wp-admin/css/customize-controls.css
index f1962acf5d..b888f610bb 100644
--- a/src/wp-admin/css/customize-controls.css
+++ b/src/wp-admin/css/customize-controls.css
@@ -2030,7 +2030,7 @@ p.customize-section-description {
 	display: none;
 }
 
-.themes-section-installed_themes .theme .notice-success {
+.themes-section-installed_themes .theme .notice-success:not(.updated-message) {
 	display: none; /* Hide "installed" notice on installed themes tab. */
 }
 
diff --git a/src/wp-admin/js/customize-controls.js b/src/wp-admin/js/customize-controls.js
index d9554618f2..365a99d8d6 100644
--- a/src/wp-admin/js/customize-controls.js
+++ b/src/wp-admin/js/customize-controls.js
@@ -3347,7 +3347,10 @@
 				api.control.each( function( control ) {
 					if ( 'theme' === control.params.type && control.params.theme.id === response.slug ) {
 						control.params.theme.hasUpdate = false;
-						control.rerenderAsInstalled( true );
+						control.params.theme.version = response.newVersion;
+						setTimeout( function() {
+							control.rerenderAsInstalled( true );
+						}, 2000 );
 					}
 				});
 			} );
diff --git a/src/wp-admin/js/updates.js b/src/wp-admin/js/updates.js
index b62c1de869..2b5ba92913 100644
--- a/src/wp-admin/js/updates.js
+++ b/src/wp-admin/js/updates.js
@@ -937,12 +937,12 @@
 		} else if ( 'customize' === pagenow ) {
 
 			// Update the theme details UI.
-			$notice = $( '#update-theme' ).closest( '.notice' ).removeClass( 'notice-large' );
+			$notice = $( '[data-slug="' + args.slug + '"].notice' ).removeClass( 'notice-large' );
 
 			$notice.find( 'h3' ).remove();
 
 			// Add the top-level UI, and update both.
-			$notice = $notice.add( $( '#customize-control-theme-installed_' + args.slug ).find( '.update-message' ) );
+			$notice = $notice.add( $( '#customize-control-installed_theme_' + args.slug ).find( '.update-message' ) );
 			$notice = $notice.addClass( 'updating-message' ).find( 'p' );
 
 		} else {
@@ -988,10 +988,17 @@
 			$notice, newText;
 
 		if ( 'customize' === pagenow ) {
-			$theme = wp.customize.control( 'installed_theme_' + response.slug ).container;
-		}
+			$theme = $( '.updating-message' ).siblings( '.theme-name' );
 
-		if ( 'themes-network' === pagenow ) {
+			if ( $theme.length ) {
+
+				// Update the version number in the row.
+				newText = $theme.html().replace( response.oldVersion, response.newVersion );
+				$theme.html( newText );
+			}
+
+			$notice = $( '.theme-info .notice' ).add( wp.customize.control( 'installed_theme_' + response.slug ).container.find( '.theme' ).find( '.update-message' ) );
+		} else if ( 'themes-network' === pagenow ) {
 			$notice = $theme.find( '.update-message' );
 
 			// Update the version number in the row.
@@ -1016,7 +1023,7 @@
 		$document.trigger( 'wp-theme-update-success', response );
 
 		// Show updated message after modal re-rendered.
-		if ( isModalOpen ) {
+		if ( isModalOpen && 'customize' !== pagenow ) {
 			$( '.theme-info .theme-author' ).after( wp.updates.adminNotice( updatedMessage ) );
 		}
 	};
@@ -1046,7 +1053,7 @@
 		}
 
 		if ( 'customize' === pagenow ) {
-			$theme = wp.customize.control( 'installed_theme_' + response.slug ).container;
+			$theme = wp.customize.control( 'installed_theme_' + response.slug ).container.find( '.theme' );
 		}
 
 		if ( 'themes-network' === pagenow ) {
diff --git a/src/wp-includes/class-wp-customize-manager.php b/src/wp-includes/class-wp-customize-manager.php
index 5dfc5bd7d0..12256d2173 100644
--- a/src/wp-includes/class-wp-customize-manager.php
+++ b/src/wp-includes/class-wp-customize-manager.php
@@ -4276,6 +4276,9 @@ final class WP_Customize_Manager {
 
 		if ( ! is_multisite() && ( current_user_can( 'install_themes' ) || current_user_can( 'update_themes' ) || current_user_can( 'delete_themes' ) ) ) {
 			wp_enqueue_script( 'updates' );
+			wp_localize_script( 'updates', '_wpUpdatesItemCounts', array(
+				'totals' => wp_get_update_data(),
+			) );
 		}
 	}