Fixed the issue where the object wasn't displayed after pressing the ESC key in the multi-material painting gizmo.

key in the multi-material painting gizmo.
Fixed also a similar issue in support and seam gizmos where an object was displayed with the wrong color after pressing the ESC key.

src/slic3r/GUI/Gizmos/GLGizmoFdmSupports.cpp

@@ -21,6 +21,7 @@ void GLGizmoFdmSupports::on_shutdown()
 {
     m_angle_threshold_deg = 0.f;
     m_parent.use_slope(false);
+    m_parent.toggle_model_objects_visibility(true);
 }
 
 

src/slic3r/GUI/Gizmos/GLGizmoMmuSegmentation.cpp

@@ -19,6 +19,7 @@ namespace Slic3r::GUI {
 void GLGizmoMmuSegmentation::on_shutdown()
 {
     m_parent.use_slope(false);
+    m_parent.toggle_model_objects_visibility(true);
 }
 
 std::string GLGizmoMmuSegmentation::on_get_name() const

src/slic3r/GUI/Gizmos/GLGizmoSeam.cpp

@@ -16,6 +16,13 @@ namespace Slic3r::GUI {
 
 
 
+void GLGizmoSeam::on_shutdown()
+{
+    m_parent.toggle_model_objects_visibility(true);
+}
+
+
+
 bool GLGizmoSeam::on_init()
 {
     m_shortcut_key = WXK_CONTROL_P;

src/slic3r/GUI/Gizmos/GLGizmoSeam.hpp

@@ -27,7 +27,7 @@ private:
     void update_from_model_object() override;
 
     void on_opening() override {}
-    void on_shutdown() override {}
+    void on_shutdown() override;
 
     // This map holds all translated description texts, so they can be easily referenced during layout calculations
     // etc. When language changes, GUI is recreated and this class constructed again, so the change takes effect.