From e547a0c3d1e7a184d434356d3a6b4a121e4b6691 Mon Sep 17 00:00:00 2001
From: Lukas Matena <lukasmatena@seznam.cz>
Date: Fri, 13 Mar 2020 15:58:40 +0100
Subject: [PATCH] Fix of a rare crash on opening an SLA gizmo (supports or
 hollow)

---
 src/slic3r/GUI/Gizmos/GLGizmosManager.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/slic3r/GUI/Gizmos/GLGizmosManager.cpp b/src/slic3r/GUI/Gizmos/GLGizmosManager.cpp
index 35292f31c..8ff4d26c2 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmosManager.cpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmosManager.cpp
@@ -225,7 +225,7 @@ void GLGizmosManager::update_data()
         set_scale(Vec3d::Ones());
         set_rotation(Vec3d::Zero());
         set_flattening_data(selection.is_from_single_object() ? selection.get_model()->objects[selection.get_object_idx()] : nullptr);
-        set_sla_support_data(nullptr);
+        set_sla_support_data(selection.is_from_single_instance() ? selection.get_model()->objects[selection.get_object_idx()] : nullptr);
     }
 }