Index: src/wp-admin/includes/class-wp-screen.php
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- src/wp-admin/includes/class-wp-screen.php	(date 1512421330000)
+++ src/wp-admin/includes/class-wp-screen.php	(date 1512422918000)
@@ -927,10 +927,6 @@
 		$show_screen = ! empty( $wp_meta_boxes[ $this->id ] ) || $columns || $this->get_option( 'per_page' );
 
 		switch ( $this->base ) {
-			case 'widgets':
-				$nonce                  = wp_create_nonce( 'widgets-access' );
-				$this->_screen_settings = '<p><a id="access-on" href="widgets.php?widgets-access=on&_wpnonce=' . urlencode( $nonce ) . '">' . __( 'Enable accessibility mode' ) . '</a><a id="access-off" href="widgets.php?widgets-access=off&_wpnonce=' . urlencode( $nonce ) . '">' . __( 'Disable accessibility mode' ) . "</a></p>\n";
-				break;
 			case 'post':
 				$expand                 = '<fieldset class="editor-expand hidden"><legend>' . __( 'Additional settings' ) . '</legend><label for="editor-expand-toggle">';
 				$expand                .= '<input type="checkbox" id="editor-expand-toggle"' . checked( get_user_setting( 'editor_expand', 'on' ), 'on', false ) . ' />';
@@ -945,9 +941,6 @@
 		/**
 		 * Filters the screen settings text displayed in the Screen Options tab.
 		 *
-		 * This filter is currently only used on the Widgets screen to enable
-		 * accessibility mode.
-		 *
 		 * @since 3.0.0
 		 *
 		 * @param string    $screen_settings Screen settings.
Index: src/wp-admin/widgets.php
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- src/wp-admin/widgets.php	(date 1512421330000)
+++ src/wp-admin/widgets.php	(date 1512422918000)
@@ -401,6 +401,10 @@
 }
 ?>
 
+<?php $nonce = wp_create_nonce( 'widgets-access' ); ?>
+<a id="access-on" class="page-title-action" href="widgets.php?widgets-access=on&_wpnonce=<?php echo urlencode( $nonce ); ?>"><?php _e( 'Enable accessibility mode' ); ?></a>
+<a id="access-off" class="page-title-action" href="widgets.php?widgets-access=off&_wpnonce=<?php echo urlencode( $nonce ); ?>"><?php _e( 'Disable accessibility mode' ); ?></a>
+
 <hr class="wp-header-end">
 
 <?php if ( isset( $_GET['message'] ) && isset( $messages[ $_GET['message'] ] ) ) { ?>