[Closed] Fixing misprint that cause disappearing title of products with variations.

Adding variation to the cart causes overwriting parent product title with empty in in case if variation is from other language that currently set in user's session.

in woocommerce-multilingual/inc/class-wcml-cart.php
in public function woocommerce_calculate_totals( $cart, $currency = false )
near

if ( ! is_null( $tr_variation_id ) ) {
	$cart->cart_contents[ $key ]['product_id']   = intval( $tr_product_id );
	$cart->cart_contents[ $key ]['variation_id'] = intval( $tr_variation_id );
	if ( defined( 'WC_VERSION' ) && version_compare( WC_VERSION, '2.7', '<' ) ) {
		$cart->cart_contents[ $key ]['data']->id = intval( $tr_product_id );
	} else {
		$cart->cart_contents[ $key ]['data']->set_id( intval( $tr_product_id ) );
	}
	$cart->cart_contents[ $key ]['data']->post = get_post( $tr_product_id );
}

$cart->cart_contents[ $key ]['data'] should keep current variation translated id ($tr_variation_id) but it overwriting with parents product id ($tr_product_id). And then this value used in WC_Product_Variation that causes other bug in woocommerce core.
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Here is other tickets that seem related to this issue.
https://wpml.org/forums/topic/ajax-add_to_cart-on-translated-product-call-empties-title-of-original-product/
https://wpml.org/forums/topic/adding-different-variations-of-a-variable-product-to-cart-deletes-the-title/