Resolved

Reported for: WooCommerce Multilingual 3.4.2

Resolved in: WooCommerce Multilingual 3.4.3

Symptoms

After adding item to cart – switching currency repeats submission (firefox error Image attached – canceling stops addition and currency switch)
– Add item to cart
– Switch currency

Workaround

None.
This is fixed in WooCommerce Multilingual 3.4.3-beta1