From c5ef44edd63faeef81dcd2c90d951de79f1a7a58 Mon Sep 17 00:00:00 2001
From: sunag <sunagbrasil@gmail.com>
Date: Thu, 23 Apr 2026 17:19:14 -0300
Subject: [PATCH] StackNode: Fix `outputNode` flow propagation (#33405)

---
 src/nodes/core/StackNode.js | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/src/nodes/core/StackNode.js b/src/nodes/core/StackNode.js
index d8762d3541b0a9..5615596e835860 100644
--- a/src/nodes/core/StackNode.js
+++ b/src/nodes/core/StackNode.js
@@ -91,19 +91,19 @@ class StackNode extends Node {
 
 	getElementType( builder ) {
 
-		return this.hasOutput( builder ) ? this.outputNode.getElementType( builder ) : 'void';
+		return this.outputNode ? this.outputNode.getElementType( builder ) : 'void';
 
 	}
 
 	generateNodeType( builder ) {
 
-		return this.hasOutput( builder ) ? this.outputNode.getNodeType( builder ) : 'void';
+		return this.outputNode ? this.outputNode.getNodeType( builder ) : 'void';
 
 	}
 
 	getMemberType( builder, name ) {
 
-		return this.hasOutput( builder ) ? this.outputNode.getMemberType( builder, name ) : 'void';
+		return this.outputNode ? this.outputNode.getMemberType( builder, name ) : 'void';
 
 	}
 
@@ -312,12 +312,6 @@ class StackNode extends Node {
 
 	}
 
-	hasOutput( builder ) {
-
-		return this.outputNode && this.outputNode.isNode && this.outputNode.getNodeType( builder ) !== 'void';
-
-	}
-
 	build( builder, ...params ) {
 
 		const previousStack = getCurrentStack();
@@ -393,9 +387,15 @@ class StackNode extends Node {
 
 		let result;
 
-		if ( this.hasOutput( builder ) ) {
+		if ( this.outputNode ) {
 
-			result = this.outputNode.build( builder, ...params );
+			const buildResult = this.outputNode.build( builder, ...params );
+
+			if ( builder.buildStage !== 'generate' || this.outputNode.getNodeType( builder ) !== 'void' ) {
+
+				result = buildResult;
+
+			}
 
 		} else {