Conflict with WPML and ACF (flags display error)

Hi,
After installing woocommerce, there’s a strange behavior of acf fields in wp-panel.
Normally, if you have WPML installed, acf fields of post-object type show the language flag before the field value.
But since I installed Woocommerce the following string is displayed instead of the flag
<span class = ‘acf_po_flag acf_po_flag_it’> it </span>

If I disable Woocommerce, the flag is displayed correctly.

Thanks