From b88946787be9549a950558419bcb29c084905f9a Mon Sep 17 00:00:00 2001
From: ghidravore <ghidravore@users.noreply.github.com>
Date: Fri, 14 Feb 2020 17:22:59 -0500
Subject: [PATCH] fixed issue in GTree where calling setChildren with exiting
 children put the tree in a bad state

---
 .../src/main/java/docking/widgets/tree/CoreGTreeNode.java   | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Ghidra/Framework/Docking/src/main/java/docking/widgets/tree/CoreGTreeNode.java b/Ghidra/Framework/Docking/src/main/java/docking/widgets/tree/CoreGTreeNode.java
index 099e92c268..1464e1c9fe 100644
--- a/Ghidra/Framework/Docking/src/main/java/docking/widgets/tree/CoreGTreeNode.java
+++ b/Ghidra/Framework/Docking/src/main/java/docking/widgets/tree/CoreGTreeNode.java
@@ -169,7 +169,11 @@ abstract class CoreGTreeNode implements Cloneable {
 
 		if (oldChildren != null) {
 			for (GTreeNode node : oldChildren) {
-				node.dispose();
+				// only dispose old nodes that aren't included in the new child list - if any
+				// old nodes don't have a parent, then they were not include in the new list
+				if (node.getParent() == null) {
+					node.dispose();
+				}
 			}
 		}
 	}