Total cache doubles facebook fields in page code

When I activate the plugin, I get double fields of “og” type, as in
http://www.classicalmusicnews.ru/news/politsiya-rassleduet-delo-ob-ubiystve-pedagoga-tsmsh-tatyanyi-stoklitskoy/

When I deactivate the plugin, I can pass the facebook debug fine: https://developers.facebook.com/tools/debug/og/object?q=http%3A%2F%2Fwww.classicalmusicnews.ru%2Fnews%2Fpolitsiya-rassleduet-delo-ob-ubiystve-pedagoga-tsmsh-tatyanyi-stoklitskoy%2F

Is there anything that can be done about it? Thanks a lot!

http://wordpress.org/plugins/w3-total-cache/