Bug on chrome about background-image

Can anybody enlighten me on this issue?

background-image in chrome does not show in edit mode; it's fine in preview mode; works on FF3 and IE7. Not sure it's caused by chrome's or ckeditor.

Strange thing is: if I change the bg-img url to: http://localhost/images/templates/bg_2.png, it will show in chrome too. Still can't figure out why absolute path without domain name does not work.

Versions: Chrome 4.1.249.1064 (45376); CKEditor 3.2.1
Code:

CKEDITOR.addTemplates('myTemplate', {
    templates: [{
        title      : 'Template Title',
        description: 'A template with an image background.',
        html       : '<div style="background: #ff0 url(/images/templates/bg_2.png) no-repeat left top;">Hello world</div>'
    }]
});