fix: don't restore batch in #await

.changeset/shaky-jars-cut.md

@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: don't restore batch in `#await`

packages/svelte/src/internal/client/dom/blocks/await.js

@@ -12,7 +12,7 @@ import {
 import { queue_micro_task } from '../task.js';
 import { HYDRATION_START_ELSE, UNINITIALIZED } from '../../../../constants.js';
 import { is_runes } from '../../context.js';
-import { flushSync, is_flushing_sync } from '../../reactivity/batch.js';
+import { Batch, flushSync, is_flushing_sync } from '../../reactivity/batch.js';
 import { BranchManager } from './branches.js';
 import { capture, unset_context } from '../../reactivity/async.js';
 
@@ -69,7 +69,11 @@ export function await_block(node, get_input, pending_fn, then_fn, catch_fn) {
 				if (destroyed) return;
 
 				resolved = true;
-				restore();
+				// We don't want to restore the previous batch here; {#await} blocks don't follow the async logic
+				// we have elsewhere, instead pending/resolve/fail states are each their own batch so to speak.
+				restore(false);
+				// Make sure we have a batch, since the branch manager expects one to exist
+				Batch.ensure();
 
 				if (hydrating) {
 					// `restore()` could set `hydrating` to `true`, which we very much

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

@@ -33,7 +33,6 @@ import {
 	set_hydrating,
 	skip_nodes
 } from '../dom/hydration.js';
-import { create_text } from '../dom/operations.js';
 
 /**
  *
@@ -102,11 +101,11 @@ export function capture() {
 		var previous_dev_stack = dev_stack;
 	}
 
-	return function restore() {
+	return function restore(activate_batch = true) {
 		set_active_effect(previous_effect);
 		set_active_reaction(previous_reaction);
 		set_component_context(previous_component_context);
-		previous_batch?.activate();
+		if (activate_batch) previous_batch?.activate();
 
 		if (was_hydrating) {
 			set_hydrating(true);