diff --git a/src/wp-includes/class-wp-theme-json.php b/src/wp-includes/class-wp-theme-json.php
index e8d51c4e0f569..455aeeb1214c3 100644
--- a/src/wp-includes/class-wp-theme-json.php
+++ b/src/wp-includes/class-wp-theme-json.php
@@ -3498,23 +3498,6 @@ public function get_styles_for_block( $block_metadata ) {
 			$element_pseudo_allowed = static::VALID_ELEMENT_PSEUDO_SELECTORS[ $current_element ];
 		}
 
-		/*
-		 * Check if we're processing a block pseudo-selector.
-		 * $block_metadata['path'] = array( 'styles', 'blocks', 'core/button', ':hover' );
-		 */
-		$is_processing_block_pseudo = false;
-		$block_pseudo_selector      = null;
-		if ( in_array( 'blocks', $block_metadata['path'], true ) && count( $block_metadata['path'] ) >= 4 ) {
-			$block_name        = static::get_block_name_from_metadata_path( $block_metadata ); // 'core/button'
-			$last_path_element = $block_metadata['path'][ count( $block_metadata['path'] ) - 1 ]; // ':hover'
-
-			if ( isset( static::VALID_BLOCK_PSEUDO_SELECTORS[ $block_name ] ) &&
-				in_array( $last_path_element, static::VALID_BLOCK_PSEUDO_SELECTORS[ $block_name ], true ) ) {
-				$is_processing_block_pseudo = true;
-				$block_pseudo_selector      = $last_path_element;
-			}
-		}
-
 		/*
 		 * Check for allowed pseudo classes (e.g. ":hover") from the $selector ("a:hover").
 		 * This also resets the array keys.
@@ -3544,15 +3527,12 @@ static function ( $pseudo_selector ) use ( $selector ) {
 			&& in_array( $pseudo_selector, static::VALID_ELEMENT_PSEUDO_SELECTORS[ $current_element ], true )
 		) {
 			$declarations = static::compute_style_properties( $node[ $pseudo_selector ], $settings, null, $this->theme_json, $selector, $use_root_padding );
-		} elseif ( $is_processing_block_pseudo ) {
-			// Process block pseudo-selector styles
-			// For block pseudo-selectors, we need to get the block data first, then access the pseudo-selector
-			$block_name  = static::get_block_name_from_metadata_path( $block_metadata ); // 'core/button'
-			$block_data  = _wp_array_get( $this->theme_json, array( 'styles', 'blocks', $block_name ), array() );
-			$pseudo_data = $block_data[ $block_pseudo_selector ] ?? array();
-
-			$declarations = static::compute_style_properties( $pseudo_data, $settings, null, $this->theme_json, $selector, $use_root_padding );
 		} else {
+			/*
+			 * For block pseudo-selector nodes (e.g. ':hover'), $node has already had any
+			 * feature-selector properties (e.g. writingMode) removed by get_feature_declarations_for_node,
+			 * so those properties are not output twice.
+			 */
 			$declarations = static::compute_style_properties( $node, $settings, null, $this->theme_json, $selector, $use_root_padding );
 		}
 
diff --git a/tests/phpunit/tests/theme/wpThemeJson.php b/tests/phpunit/tests/theme/wpThemeJson.php
index 78e1c38f0a03a..dfc09200ec2b4 100644
--- a/tests/phpunit/tests/theme/wpThemeJson.php
+++ b/tests/phpunit/tests/theme/wpThemeJson.php
@@ -7160,6 +7160,37 @@ public function test_merge_incoming_data_unique_slugs_always_preserved() {
 		$this->assertEqualSetsWithIndex( $expected, $actual );
 	}
 
+	/**
+	 * Tests that when a block with a custom feature selector (e.g. core/button's writingMode
+	 * uses '.wp-block-button' rather than the root '.wp-block-button .wp-block-button__link')
+	 * has pseudo-state styles, the feature selector CSS is scoped to the pseudo-state and not
+	 * output under the block's default-state selector.
+	 */
+	public function test_get_stylesheet_pseudo_selector_scopes_feature_selector_css() {
+		$theme_json = new WP_Theme_JSON(
+			array(
+				'version' => WP_Theme_JSON::LATEST_SCHEMA,
+				'styles'  => array(
+					'blocks' => array(
+						'core/button' => array(
+							':hover' => array(
+								'typography' => array(
+									'writingMode' => 'vertical-rl',
+								),
+							),
+						),
+					),
+				),
+			),
+			'default'
+		);
+
+		$css = $theme_json->get_stylesheet( array( 'styles' ), null, array( 'skip_root_layout_styles' => true ) );
+
+		// writing-mode should be scoped to :hover, not the root block selector.
+		$this->assertSame( ':root :where(.wp-block-button:hover){writing-mode: vertical-rl;}', $css );
+	}
+
 	/**
 	 * Test that block pseudo selectors are processed correctly.
 	 */