From 410ded635c7e1797c5d441092693a13b811d4e9e Mon Sep 17 00:00:00 2001
From: "Zheng, Lei" <realthunder.dev@gmail.com>
Date: Sat, 15 Oct 2022 12:13:43 +0800
Subject: [PATCH] Gui: fix crash in DAGView when deleting object

Fixes #587
---
 src/Gui/CommandDoc.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/Gui/CommandDoc.cpp b/src/Gui/CommandDoc.cpp
index 1c3e7798097e..1920bad8b076 100644
--- a/src/Gui/CommandDoc.cpp
+++ b/src/Gui/CommandDoc.cpp
@@ -1417,7 +1417,12 @@ void StdCmdDelete::activated(int iMsg)
             return;
         }
 
-        SelectionPauseNotification slock;
+        // Some code (e.g. DAGView) assumes any selection changes refers to
+        // existing object, and will crash if not. So must not delay
+        // notification.
+        //
+        // SelectionPauseNotification slock;
+
         App::TransactionLocker tlock;
 
         Gui::getMainWindow()->setUpdatesEnabled(false);