From 98a5c36172d9e94796325066a8112b7254ff142d Mon Sep 17 00:00:00 2001
From: peterkogo <peter@xyflow.com>
Date: Wed, 15 Oct 2025 14:12:47 +0200
Subject: [PATCH] change incrementation

---
 packages/system/src/utils/store.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/system/src/utils/store.ts b/packages/system/src/utils/store.ts
index 73b4e619..a56b5d4f 100644
--- a/packages/system/src/utils/store.ts
+++ b/packages/system/src/utils/store.ts
@@ -120,7 +120,7 @@ export function adoptUserNodes<NodeType extends NodeBase>(
 ): boolean {
   const _options = mergeObjects(adoptUserNodesDefaultOptions, options);
 
-  let rootParentIndex = { i: -1 };
+  let rootParentIndex = { i: 0 };
   let nodesInitialized = nodes.length > 0;
   const tmpLookup = new Map(nodeLookup);
   const selectedNodeZ: number = _options?.elevateNodesOnSelect ? 1000 : 0;
@@ -216,7 +216,7 @@ function updateChildNode<NodeType extends NodeBase>(
 
   // We just want to set the rootParentIndex for the first child
   if (rootParentIndex && !parentNode.parentId && parentNode.internals.rootParentIndex === undefined) {
-    parentNode.internals.rootParentIndex = ++rootParentIndex.i;
+    parentNode.internals.rootParentIndex = rootParentIndex.i++;
     parentNode.internals.z = parentNode.internals.z + rootParentIndex.i * 10;
   }