From d69620a7161d37768f882e5924a6ab9d7ffcefd6 Mon Sep 17 00:00:00 2001
From: tome9111991 <57866234+tome9111991@users.noreply.github.com>
Date: Fri, 16 Jan 2026 20:09:47 +0100
Subject: [PATCH] Fix: Change filament for a specific object instance (#11963)

Fix: Crash when setting filament for object instance
---
 src/slic3r/GUI/GUI_ObjectList.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/slic3r/GUI/GUI_ObjectList.cpp b/src/slic3r/GUI/GUI_ObjectList.cpp
index 1cea62ece8..4429faf1f5 100644
--- a/src/slic3r/GUI/GUI_ObjectList.cpp
+++ b/src/slic3r/GUI/GUI_ObjectList.cpp
@@ -6127,7 +6127,8 @@ void ObjectList::set_extruder_for_selected_items(const int extruder)
          * So, if Instance is selected, get its Object item and change it
          */
         ItemType sel_item_type = m_objects_model->GetItemType(sel_item);
-        wxDataViewItem item = (sel_item_type & itInstance) ? m_objects_model->GetObject(item) : sel_item;
+        // ORCA: Fix crash when setting filament for instance (item was used uninitialized)
+        wxDataViewItem item = (sel_item_type & itInstance) ? m_objects_model->GetObject(sel_item) : sel_item;
         ItemType type = m_objects_model->GetItemType(item);
         if (type & itVolume) {
             const int obj_idx = m_objects_model->GetObjectIdByItem(item);