diff --git a/.changeset/silver-dots-try.md b/.changeset/silver-dots-try.md
new file mode 100644
index 00000000..23994cc4
--- /dev/null
+++ b/.changeset/silver-dots-try.md
@@ -0,0 +1,5 @@
+---
+'@reactflow/core': patch
+---
+
+fix isRectObject function
diff --git a/packages/core/src/utils/index.ts b/packages/core/src/utils/index.ts
index 02cff5a0..d869a81a 100644
--- a/packages/core/src/utils/index.ts
+++ b/packages/core/src/utils/index.ts
@@ -53,7 +53,8 @@ export const getOverlappingArea = (rectA: Rect, rectB: Rect): number => {
 };
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
-export const isRectObject = (obj: any): obj is Rect => !!obj.width && !!obj.height && !!obj.x && !!obj.y;
+export const isRectObject = (obj: any): obj is Rect =>
+  isNumeric(obj.width) && isNumeric(obj.height) && isNumeric(obj.x) && isNumeric(obj.y);
 
 /* eslint-disable-next-line @typescript-eslint/no-explicit-any */
 export const isNumeric = (n: any): n is number => !isNaN(n) && isFinite(n);