diff --git a/src/slic3r/GUI/GUI_ObjectManipulation.cpp b/src/slic3r/GUI/GUI_ObjectManipulation.cpp
index 2cbd048e55..224c053e4e 100644
--- a/src/slic3r/GUI/GUI_ObjectManipulation.cpp
+++ b/src/slic3r/GUI/GUI_ObjectManipulation.cpp
@@ -216,6 +216,9 @@ ObjectManipulation::ObjectManipulation(wxWindow* parent) :
                 else
                     return;
 
+                selection.synchronize_unselected_instances(Selection::SYNC_ROTATION_GENERAL);
+                selection.synchronize_unselected_volumes();
+
                 canvas->do_mirror();
                 canvas->set_as_dirty();
                 UpdateAndShow(true);
@@ -294,6 +297,8 @@ ObjectManipulation::ObjectManipulation(wxWindow* parent) :
                     else
                         return;
 
+                    selection.synchronize_unselected_instances(Selection::SYNC_ROTATION_GENERAL);
+                    selection.synchronize_unselected_volumes();
                     canvas->do_rotate();
 
                     UpdateAndShow(true);
diff --git a/src/slic3r/GUI/Selection.hpp b/src/slic3r/GUI/Selection.hpp
index 54bf52706b..5da1e477bc 100644
--- a/src/slic3r/GUI/Selection.hpp
+++ b/src/slic3r/GUI/Selection.hpp
@@ -333,6 +333,8 @@ private:
     void render_sidebar_rotation_hint(Axis axis) const;
     void render_sidebar_scale_hint(Axis axis) const;
     void render_sidebar_size_hint(Axis axis, double length) const;
+
+public:
     enum SyncRotationType {
         // Do not synchronize rotation. Either not rotating at all, or rotating by world Z axis.
         SYNC_ROTATION_NONE = 0,
@@ -343,6 +345,8 @@ private:
     };
     void synchronize_unselected_instances(SyncRotationType sync_rotation_type);
     void synchronize_unselected_volumes();
+
+private:
     void ensure_on_bed();
     bool is_from_fully_selected_instance(unsigned int volume_idx) const;