From 0a0591e907796f086dbbb359b5b65a88e38d8ced Mon Sep 17 00:00:00 2001
From: Alan Knowles <alan@roojs.com>
Date: Mon, 6 Jun 2016 16:43:45 +0800
Subject: [PATCH] src/Builder4/WindowState.vala

---
 src/Builder4/WindowState.vala | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Builder4/WindowState.vala b/src/Builder4/WindowState.vala
index 56aff307f..969dec2c6 100644
--- a/src/Builder4/WindowState.vala
+++ b/src/Builder4/WindowState.vala
@@ -120,6 +120,10 @@ public class WindowState : Object
 		this.left_tree.el.show_all();
 		   
 		this.left_tree.before_node_change.connect(() => {
+			// if the node change is caused by the editor (code preview)
+			if (this.left_tree.tree.lastEventSource == "editor") {
+				return false;
+			}
 			return this.leftTreeBeforeChange();
 
 		});
-- 
2.39.2