fix member expressions for real

packages/svelte/src/compiler/phases/3-transform/client/visitors/shared/component.js

@@ -176,7 +176,9 @@ export function build_component(node, component_name, context, anchor = context.
 					// When we have a non-simple computation, anything other than an Identifier or Member expression,
 					// then there's a good chance it needs to be memoized to avoid over-firing when read within the
 					// child component (e.g. `active={i === index}`)
-					const should_wrap_in_derived = get_attribute_chunks(attribute.value).some((n) => {
+					const should_wrap_in_derived =
+						metadata.is_async ||
+						get_attribute_chunks(attribute.value).some((n) => {
 							return (
 								n.type === 'ExpressionTag' &&
 								n.expression.type !== 'Identifier' &&