Block Checkout: currency_prefix empty on non-default language page with Polylang

Setup:
– WooCommerce Block Checkout
– CURCY Multi Currency
– Polylang

Issue:
On the English version of the checkout page (/en/checkout/),
the currency symbol/prefix is empty in the rendered HTML.

The REST API (/wc/store/v1/cart) returns correct currency data
after page load, but the server-side rendered HTML contains
empty currency_prefix, causing React to hydrate with no symbol.

The Chinese version works correctly because it matches the
default currency. Any non-default language page fails.

Workaround needed:
CURCY needs to initialize the correct currency during
server-side block rendering, not just via REST API.

Please advise if there is an official fix or setting for
Block Checkout Polylang compatibility.