diff --git a/src/wp-admin/edit-form-blocks.php b/src/wp-admin/edit-form-blocks.php
index 5e7b39d619..0268bc8ae8 100644
--- a/src/wp-admin/edit-form-blocks.php
+++ b/src/wp-admin/edit-form-blocks.php
@@ -191,7 +191,6 @@ $editor_settings = array(
 	'titlePlaceholder'                     => apply_filters( 'enter_title_here', __( 'Add title' ), $post ),
 	'bodyPlaceholder'                      => $body_placeholder,
 	'autosaveInterval'                     => AUTOSAVE_INTERVAL,
-	'styles'                               => get_block_editor_theme_styles(),
 	'richEditingEnabled'                   => user_can_richedit(),
 	'postLock'                             => $lock_details,
 	'postLockUtils'                        => array(
diff --git a/src/wp-includes/block-editor.php b/src/wp-includes/block-editor.php
index 953349d8a8..8f3070af96 100644
--- a/src/wp-includes/block-editor.php
+++ b/src/wp-includes/block-editor.php
@@ -307,7 +307,8 @@ function get_block_editor_settings( array $custom_settings, $block_editor_contex
 		$custom_settings
 	);
 
-	$presets = array(
+	$global_styles = array();
+	$presets       = array(
 		array(
 			'css'            => 'variables',
 			'__unstableType' => 'presets',
@@ -320,8 +321,8 @@ function get_block_editor_settings( array $custom_settings, $block_editor_contex
 	foreach ( $presets as $preset_style ) {
 		$actual_css = wp_get_global_stylesheet( array( $preset_style['css'] ) );
 		if ( '' !== $actual_css ) {
-			$preset_style['css']         = $actual_css;
-			$editor_settings['styles'][] = $preset_style;
+			$preset_style['css'] = $actual_css;
+			$global_styles[]     = $preset_style;
 		}
 	}
 
@@ -332,11 +333,13 @@ function get_block_editor_settings( array $custom_settings, $block_editor_contex
 		);
 		$actual_css    = wp_get_global_stylesheet( array( $block_classes['css'] ) );
 		if ( '' !== $actual_css ) {
-			$block_classes['css']        = $actual_css;
-			$editor_settings['styles'][] = $block_classes;
+			$block_classes['css'] = $actual_css;
+			$global_styles[]      = $block_classes;
 		}
 	}
 
+	$editor_settings['styles'] = array_merge( $global_styles, get_block_editor_theme_styles() );
+
 	$editor_settings['__experimentalFeatures'] = wp_get_global_settings();
 	// These settings may need to be updated based on data coming from theme.json sources.
 	if ( isset( $editor_settings['__experimentalFeatures']['color']['palette'] ) ) {