From 0823ae7ae47989c31d64de222d6f6e4bdcea1962 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9mi=20Verschelde?= <rverschelde@gmail.com>
Date: Tue, 28 May 2019 12:40:39 +0200
Subject: [PATCH] Node::duplicate: Don't set name if original node is nameless

In practice this only happens when duplicating a node which is not in
the scene tree yet, as nameless nodes get assigned a generated name
when added to the scene tree.

Fixes #27319.
---
 scene/main/node.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/scene/main/node.cpp b/scene/main/node.cpp
index 368dea76498..2f23c117481 100644
--- a/scene/main/node.cpp
+++ b/scene/main/node.cpp
@@ -2077,7 +2077,9 @@ Node *Node::_duplicate(int p_flags, Map<const Node *, Node *> *r_duplimap) const
 		}
 	}
 
-	node->set_name(get_name());
+	if (get_name() != String()) {
+		node->set_name(get_name());
+	}
 
 #ifdef TOOLS_ENABLED
 	if ((p_flags & DUPLICATE_FROM_EDITOR) && r_duplimap)