From f739c7fae129e143acf3765c0e768000f04c2b8e Mon Sep 17 00:00:00 2001
From: Svilen Ivanov <92510182+svilen-ivanov-kubit@users.noreply.github.com>
Date: Thu, 30 Oct 2025 16:04:40 +0200
Subject: [PATCH 1/3] Avoid modifying node.measured object, create copy instead

When working with immutable `node` data, modifying in-place `node.measured` properties is not allowed. Since we perform a shallow copy, we need to create a new `measured` object to populate `width` and `height`
---
 packages/react/src/utils/changes.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/react/src/utils/changes.ts b/packages/react/src/utils/changes.ts
index f2d9bdd3..422832f2 100644
--- a/packages/react/src/utils/changes.ts
+++ b/packages/react/src/utils/changes.ts
@@ -125,7 +125,7 @@ function applyChange(change: any, element: any): any {
 
     case 'dimensions': {
       if (typeof change.dimensions !== 'undefined') {
-        element.measured ??= {};
+        element.measured = {};
         element.measured.width = change.dimensions.width;
         element.measured.height = change.dimensions.height;
 

From f858cbb404ccb3ddcaf55563aec73f85e44d58bf Mon Sep 17 00:00:00 2001
From: moklick <info@moritzklack.com>
Date: Tue, 25 Nov 2025 12:34:49 +0100
Subject: [PATCH 2/3] chore(apply-changes): cleanup)

---
 packages/react/src/utils/changes.ts | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/packages/react/src/utils/changes.ts b/packages/react/src/utils/changes.ts
index 422832f2..de05236a 100644
--- a/packages/react/src/utils/changes.ts
+++ b/packages/react/src/utils/changes.ts
@@ -125,9 +125,9 @@ function applyChange(change: any, element: any): any {
 
     case 'dimensions': {
       if (typeof change.dimensions !== 'undefined') {
-        element.measured = {};
-        element.measured.width = change.dimensions.width;
-        element.measured.height = change.dimensions.height;
+        element.measured = {
+          ...change.dimensions,
+        };
 
         if (change.setAttributes) {
           if (change.setAttributes === true || change.setAttributes === 'width') {

From 38dbf41c464550cc803b946a4ad1f46982385a03 Mon Sep 17 00:00:00 2001
From: moklick <info@moritzklack.com>
Date: Tue, 25 Nov 2025 12:35:50 +0100
Subject: [PATCH 3/3] chore(changesets): add

---
 .changeset/dry-seahorses-deliver.md | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 .changeset/dry-seahorses-deliver.md

diff --git a/.changeset/dry-seahorses-deliver.md b/.changeset/dry-seahorses-deliver.md
new file mode 100644
index 00000000..1125ea3e
--- /dev/null
+++ b/.changeset/dry-seahorses-deliver.md
@@ -0,0 +1,5 @@
+---
+'@xyflow/react': patch
+---
+
+Always create a new measured object in apply changes.