chrome-admin-menu-fix.php

<?php
/*
Plugin Name: Chrome Admin Menu Fix
Description: Quick fix for the Chrome 45 admin menu display glitches
Author: Steve Jones for The Space Between / Samuel Wood / Otto42
Author URI: http://the--space--between.com
Version: 2.1.0
*/

function chromefix_inline_css()
{ 
	wp_add_inline_style( 'wp-admin', '#adminmenu { transform: translateZ(0); }' );
}

add_action('admin_enqueue_scripts', 'chromefix_inline_css');