Tested / bugtracked on twentyfourteen new install + woo + wpml, all latest.
Sicnce Woocommerce 2.x upgrade during winter this plugin is in conflict with Woocommerce multilang (WPML) on product landing pages and woo cart widget.
When WPML translation module is active the widget does not load proper language. Instead the default language is always loaded, if comments or reviews are allowed.
Disable Live comments preview solves the problem. This was no conflict before the new woocommerce update 2.x
I think it is a complex problem here, dependent on default rules for comments, logged in, review settings and much more.
The widget (cart) is ok on category pages (ajax loaded)
The widget is ok when logged out (Comments not alowed)
This is just a info for all Woo WPML users.