From 3924d410730ecb7c5dcccef87cc815b9b714c105 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Fri, 22 Oct 2021 18:49:49 +0200
Subject: [PATCH] Part: do not open a second transaction when there is already
 a pending transaction

---
 src/Mod/Part/Gui/TaskAttacher.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Mod/Part/Gui/TaskAttacher.cpp b/src/Mod/Part/Gui/TaskAttacher.cpp
index 8f608f7f8a74..0c7273c858b9 100644
--- a/src/Mod/Part/Gui/TaskAttacher.cpp
+++ b/src/Mod/Part/Gui/TaskAttacher.cpp
@@ -1060,7 +1060,8 @@ TaskDlgAttacher::~TaskDlgAttacher()
 void TaskDlgAttacher::open()
 {
     Gui::Document* document = Gui::Application::Instance->getDocument(ViewProvider->getObject()->getDocument());
-    document->openCommand(QT_TRANSLATE_NOOP("Command", "Edit attachment"));
+    if (!document->hasPendingCommand())
+        document->openCommand(QT_TRANSLATE_NOOP("Command", "Edit attachment"));
 }
 
 void TaskDlgAttacher::clicked(int)