diff --git a/wp-includes/customize/class-wp-customize-nav-menus-panel.php b/wp-includes/customize/class-wp-customize-nav-menus-panel.php
index 18328e5d3f..c0d098bc7d 100644
--- a/wp-includes/customize/class-wp-customize-nav-menus-panel.php
+++ b/wp-includes/customize/class-wp-customize-nav-menus-panel.php
@@ -98,27 +98,4 @@ class WP_Customize_Nav_Menus_Panel extends WP_Customize_Panel {
 		<li class="customize-control-title customize-section-title-nav_menus-heading"><?php _e( 'Menus' ); ?></li>
 		<?php
 	}
-
-	/**
-	 * Checks required user capabilities and whether the theme has the
-	 * feature support required by the panel.
-	 *
-	 * @since 5.9.0
-	 *
-	 * @return bool False if theme doesn't support the panel or the user doesn't have the capability.
-	 */
-	public function check_capabilities() {
-		/*
-		 * WP_Customize_Panel::$theme_supports only supports checking one
-		 * theme_supports, so instead we override check_capabilities().
-		 */
-		if (
-			! current_theme_supports( 'menus' ) &&
-			! current_theme_supports( 'widgets' )
-		) {
-			return false;
-		}
-
-		return parent::check_capabilities();
-	}
 }
diff --git a/wp-includes/theme.php b/wp-includes/theme.php
index 84077a5d2c..6eab6fcc00 100644
--- a/wp-includes/theme.php
+++ b/wp-includes/theme.php
@@ -4257,4 +4257,23 @@ function _add_default_theme_supports() {
 	add_theme_support( 'automatic-feed-links' );
 
 	add_filter( 'should_load_separate_core_block_assets', '__return_true' );
+
+	/*
+	 * Remove the Customizer's Menus panel when block theme is active.
+	 */
+	add_filter(
+		'customize_panel_active',
+		static function ( $active, WP_Customize_Panel $panel ) {
+			if (
+				'nav_menus' === $panel->id &&
+				! current_theme_supports( 'menus' ) &&
+				! current_theme_supports( 'widgets' )
+			) {
+				$active = false;
+			}
+			return $active;
+		},
+		10,
+		2
+	);
 }
diff --git a/wp-includes/version.php b/wp-includes/version.php
index b9a6be59ce..53e30d3c53 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.1-beta3-54418';
+$wp_version = '6.1-beta3-54419';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.