From cce2c2426266bceb0756a5182402e69a5b995b2f Mon Sep 17 00:00:00 2001
From: Paddle <PaddleStroke@users.noreply.github.com>
Date: Mon, 8 Jan 2024 10:51:50 +0100
Subject: [PATCH] Core: tree: prevent object replacement when dragging

---
 src/Gui/Tree.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/Gui/Tree.cpp b/src/Gui/Tree.cpp
index fe830d468f..30148e512b 100644
--- a/src/Gui/Tree.cpp
+++ b/src/Gui/Tree.cpp
@@ -1747,7 +1747,8 @@ void TreeWidget::dragMoveEvent(QDragMoveEvent* event)
 
                 // let the view provider decide to accept the object or ignore it
                 if (da != Qt::LinkAction && !vp->canDropObjectEx(obj, owner, subname.c_str(), item->mySubs)) {
-                    if (event->possibleActions() & Qt::LinkAction) {
+                    // Cause unexpected bugs : https://github.com/FreeCAD/FreeCAD/issues/11676
+                    /*if (event->possibleActions() & Qt::LinkAction) {
                         if (items.size() > 1) {
                             TREE_TRACE("Cannot replace with more than one object");
                             event->ignore();
@@ -1760,7 +1761,7 @@ void TreeWidget::dragMoveEvent(QDragMoveEvent* event)
                         }
                         event->setDropAction(Qt::LinkAction);
                         return;
-                    }
+                    }*/
 
                     TREE_TRACE("cannot drop " << obj->getFullName() << ' '
                         << (owner ? owner->getFullName() : "<No Owner>") << '.' << subname);