From fc3199f3b5c8f83446e504aa29a3c2acb8f0524a Mon Sep 17 00:00:00 2001
From: CTomlyn <tomlyn@us.ibm.com>
Date: Mon, 23 Sep 2024 04:24:01 -0700
Subject: [PATCH] #2166 Nodes with looped links crash the UI in the test
 harness (#2167)

Signed-off-by: CTomlyn <tomlyn@us.ibm.com>
---
 canvas_modules/common-canvas/src/object-model/object-model.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/canvas_modules/common-canvas/src/object-model/object-model.js b/canvas_modules/common-canvas/src/object-model/object-model.js
index 24d6ef38c2..20ce623f81 100644
--- a/canvas_modules/common-canvas/src/object-model/object-model.js
+++ b/canvas_modules/common-canvas/src/object-model/object-model.js
@@ -1556,7 +1556,8 @@ export default class ObjectModel {
 			retval = true;
 		} else {
 			for (const link of pipeline.getLinks()) {
-				if (link.srcNodeId === startNodeId) {
+				if (link.srcNodeId === startNodeId &&
+					link.srcNodeId !== link.trgNodeId) { // Ignore self-referencing links
 					const newRetval = this.findNodesInSubGraph(link.trgNodeId, endNodeId, selection, pipelineId);
 					if (newRetval !== true) {
 						selection.pop();