Iveth,
Sorry I missed your post from before. I'm not sure why you're seeing that with the newest release, but it's only happening on pages where there is an HTML tag in the title. For example, on the page you linked to, in the browser titlebar there's a <br/> which is causing the text after that tag to display at the top.
To investigate further, I accessed the admin area of your site and tried disabling both the JFBCSystem and JLinkedSystem plugins. However, when I did that, everything behaved as if they were still enabled.. the Open Graph tags were still added to the page, the Facebook Javascript library was still included on the page, etc. Do you know why or how the page is being cached and not updating immediately when I disabled those?
If you disable both of those system plugins, does the tag go away? If so, does it immediately go away, and if not, why not?
Thanks,
Alex