Fix: Correct shipment resolving

src/Checkout/Http/Controllers/CheckoutController.php

@@ -646,6 +646,18 @@ class CheckoutController extends Controller
             ])->render(),
             // Composer (Providers\CheckoutModuleServiceProvider) fills $cart / $lines.
             'summaryHtml' => $options === null ? null : view('checkout::partials.cart-body')->render(),
+            // getPaymentMethods() filters by the cart's CURRENT fulfillment
+            // type (Modules\Core\Checkout\Services\CheckoutService's own
+            // docblock) — a shipping-option change can change that filter's
+            // result (e.g. switching to store pickup should drop
+            // cash-on-delivery and offer "pay in store" instead), so this
+            // needs to be re-rendered every time shipping options are,
+            // otherwise the payment section silently goes stale until a
+            // full page reload.
+            'paymentMethodsHtml' => $options === null ? null : view('checkout::partials.payment-methods', [
+                'paymentMethods' => $this->checkout->getPaymentMethods(),
+                'cart' => $cart,
+            ])->render(),
         ]);
     }