fixes

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

@@ -1173,6 +1173,7 @@ function mark_effects(batch, value, sources, marked, checked) {
 
 			if ((flags & DERIVED) !== 0) {
 				batch.current.delete(/** @type {Derived} */ (reaction));
+				batch.cvs.set(/** @type {Derived} */ (reaction), -1);
 
 				mark_effects(batch, /** @type {Derived} */ (reaction), sources, marked, checked);
 			} else if ((flags & (ASYNC | BLOCK_EFFECT)) !== 0 && depends_on(reaction, sources, checked)) {

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

@@ -402,7 +402,7 @@ export function update_derived(derived) {
 
 	if (!derived.equals(value)) {
 		if (active_batch !== null) {
-			active_batch.capture(derived, value, write_version);
+			(current_batch ?? active_batch).capture(derived, value, write_version);
 
 			// We also write to previous_batch because if it exists, it is a sign that we're
 			// currently in the process of flushing effects. These updates to deriveds may belong