From 75da888bc5949b657adb1fe7d2b35e84ae3a55e9 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Wed, 16 Mar 2022 08:47:56 +0100
Subject: [PATCH] Gui: fixes #6583: FreeCAD 0.20 crashes when attempting to
 change template in TechDraw For more details see also:
 https://forum.freecadweb.org/viewtopic.php?p=579530#p579530

---
 src/Gui/propertyeditor/PropertyItemDelegate.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/Gui/propertyeditor/PropertyItemDelegate.cpp b/src/Gui/propertyeditor/PropertyItemDelegate.cpp
index bb4a3714df..7f49049c46 100644
--- a/src/Gui/propertyeditor/PropertyItemDelegate.cpp
+++ b/src/Gui/propertyeditor/PropertyItemDelegate.cpp
@@ -132,6 +132,14 @@ bool PropertyItemDelegate::eventFilter(QObject *o, QEvent *ev)
         if (widget && parentEditor && parentEditor->activeEditor
                    && widget != parentEditor->activeEditor)
         {
+#if 1
+            // All the attempts to ignore the focus-out event has been approved to not work
+            // reliably because there are still cases that cannot be handled.
+            // So, the best for now is to always ignore this event.
+            // See https://forum.freecadweb.org/viewtopic.php?p=579530#p579530 why this is not
+            // possible.
+            return false;
+#else
             // We event filter child QAbstractButton and QLabel of an editor,
             // which requires special focus change in order to not mess up with
             // QItemDelegate's logic.
@@ -153,6 +161,7 @@ bool PropertyItemDelegate::eventFilter(QObject *o, QEvent *ev)
                     return false;
                 w = w->parentWidget();
             }
+#endif
         }
     }
     return QItemDelegate::eventFilter(o, ev);