diff -r 7b1b88e27a20 -r 48c4eec2b7e6 wp/wp-includes/class-wp-customize-control.php
--- a/wp/wp-includes/class-wp-customize-control.php	Thu Sep 29 08:06:27 2022 +0200
+++ b/wp/wp-includes/class-wp-customize-control.php	Fri Sep 05 18:40:08 2025 +0200
@@ -12,6 +12,7 @@
  *
  * @since 3.4.0
  */
+#[AllowDynamicProperties]
 class WP_Customize_Control {
 
 	/**
@@ -167,7 +168,7 @@
 	 *
 	 * Supplied `$args` override class property defaults.
 	 *
-	 * If `$args['settings']` is not defined, use the $id as the setting ID.
+	 * If `$args['settings']` is not defined, use the `$id` as the setting ID.
 	 *
 	 * @since 3.4.0
 	 *
@@ -552,7 +553,7 @@
 				<select id="<?php echo esc_attr( $input_id ); ?>" <?php echo $describedby_attr; ?> <?php $this->link(); ?>>
 					<?php
 					foreach ( $this->choices as $value => $label ) {
-						echo '<option value="' . esc_attr( $value ) . '"' . selected( $this->value(), $value, false ) . '>' . $label . '</option>';
+						echo '<option value="' . esc_attr( $value ) . '"' . selected( $this->value(), $value, false ) . '>' . esc_html( $label ) . '</option>';
 					}
 					?>
 				</select>
@@ -606,8 +607,11 @@
 				// Hackily add in the data link parameter.
 				$dropdown = str_replace( '<select', '<select ' . $this->get_link() . ' id="' . esc_attr( $input_id ) . '" ' . $describedby_attr, $dropdown );
 
-				// Even more hacikly add auto-draft page stubs.
-				// @todo Eventually this should be removed in favor of the pages being injected into the underlying get_pages() call. See <https://github.com/xwp/wp-customize-posts/pull/250>.
+				/*
+				 * Even more hacikly add auto-draft page stubs.
+				 * @todo Eventually this should be removed in favor of the pages being injected into the underlying get_pages() call.
+				 * See <https://github.com/xwp/wp-customize-posts/pull/250>.
+				 */
 				$nav_menus_created_posts_setting = $this->manager->get_setting( 'nav_menus_created_posts' );
 				if ( $nav_menus_created_posts_setting && current_user_can( 'publish_pages' ) ) {
 					$auto_draft_page_options = '';
@@ -631,10 +635,12 @@
 						printf( __( '+ %s' ), get_post_type_object( 'page' )->labels->add_new_item );
 						?>
 					</button>
-					<div class="new-content-item">
-						<label for="create-input-<?php echo esc_attr( $this->id ); ?>"><span class="screen-reader-text"><?php _e( 'New page title' ); ?></span></label>
-						<input type="text" id="create-input-<?php echo esc_attr( $this->id ); ?>" class="create-item-input" placeholder="<?php esc_attr_e( 'New page title&hellip;' ); ?>">
-						<button type="button" class="button add-content"><?php _e( 'Add' ); ?></button>
+					<div class="new-content-item-wrapper">
+						<label for="create-input-<?php echo esc_attr( $this->id ); ?>"><?php _e( 'New page title' ); ?></label>
+						<div class="new-content-item">
+							<input type="text" id="create-input-<?php echo esc_attr( $this->id ); ?>" class="create-item-input" >
+							<button type="button" class="button add-content"><?php _e( 'Add' ); ?></button>
+						</div>
 					</div>
 				<?php endif; ?>
 				<?php
@@ -692,7 +698,6 @@
 	 * @since 4.1.0
 	 */
 	protected function content_template() {}
-
 }
 
 /**