fix

packages/svelte/src/internal/client/reactivity/sources.js

@@ -332,9 +332,11 @@ function mark_reactions(signal, status) {
 			set_signal_status(reaction, status);
 		}
 
-		if ((flags & DERIVED) !== 0 && (flags & WAS_MARKED) === 0) {
+		if ((flags & DERIVED) !== 0) {
+			if ((flags & WAS_MARKED) === 0) {
 				reaction.f |= WAS_MARKED;
 				mark_reactions(/** @type {Derived} */ (reaction), MAYBE_DIRTY);
+			}
 		} else if (not_dirty) {
 			if ((flags & BLOCK_EFFECT) !== 0) {
 				if (eager_block_effects !== null) {