From 06c40006db969b10b77b6e80266311a555b4cdbe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?M=C3=A1rk=20Tolm=C3=A1cs?= <mark@lazycat.hu>
Date: Wed, 24 Sep 2025 19:22:32 +0200
Subject: [PATCH] fix: Elbow arrow routing issue with diamonds and ellipses
 (#10021)

---
 packages/element/src/binding.ts | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/packages/element/src/binding.ts b/packages/element/src/binding.ts
index 9d97801f2e..fa1355309b 100644
--- a/packages/element/src/binding.ts
+++ b/packages/element/src/binding.ts
@@ -999,6 +999,29 @@ export const bindPointToSnapToElementOutline = (
       intersector,
       FIXED_BINDING_DISTANCE,
     ).sort(pointDistanceSq)[0];
+
+    if (!intersection) {
+      const anotherPoint = pointFrom<GlobalPoint>(
+        !isHorizontal ? center[0] : snapPoint[0],
+        isHorizontal ? center[1] : snapPoint[1],
+      );
+      const anotherIntersector = lineSegment(
+        anotherPoint,
+        pointFromVector(
+          vectorScale(
+            vectorNormalize(vectorFromPoint(snapPoint, anotherPoint)),
+            Math.max(bindableElement.width, bindableElement.height) * 2,
+          ),
+          anotherPoint,
+        ),
+      );
+      intersection = intersectElementWithLineSegment(
+        bindableElement,
+        elementsMap,
+        anotherIntersector,
+        FIXED_BINDING_DISTANCE,
+      ).sort(pointDistanceSq)[0];
+    }
   } else {
     intersection = intersectElementWithLineSegment(
       bindableElement,