diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index b9625523d..7be2f2098 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -1326,7 +1326,7 @@ void GCode::process_layer(
         m_colorprint_heights.erase(m_colorprint_heights.begin());
         colorprint_change = true;
     }
-    if (colorprint_change)
+    if (colorprint_change && print.extruders().size()==1)
         gcode += "M600\n";
 
 
diff --git a/src/slic3r/GUI/GUI_Preview.cpp b/src/slic3r/GUI/GUI_Preview.cpp
index 5e9a5ec20..73dc658d1 100644
--- a/src/slic3r/GUI/GUI_Preview.cpp
+++ b/src/slic3r/GUI/GUI_Preview.cpp
@@ -426,6 +426,14 @@ void Preview::update_double_slider(const std::vector<double>& layers_z, bool for
     m_slider->SetTicksValues(ticks_from_config);
 
     set_double_slider_thumbs(layers_z, z_low, z_high);
+
+    bool color_print_enable = (wxGetApp().plater()->printer_technology() == ptFFF);
+    if (color_print_enable) {
+        const auto& config = wxGetApp().preset_bundle->full_config();
+        if (config.opt<ConfigOptionFloats>("nozzle_diameter")->values.size() > 1) 
+            color_print_enable = false;
+    }
+    m_slider->EnableTickManipulation(color_print_enable);
 }
 
 void Preview::fill_slider_values(std::vector<std::pair<int, double>> &values,
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index bb4441bf2..34b0aaeeb 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -1606,6 +1606,10 @@ void Plater::priv::reset()
     sidebar->obj_list()->delete_all_objects_from_list();
     object_list_changed();
     update();
+
+
+    auto& config = wxGetApp().preset_bundle->project_config;
+    config.option<ConfigOptionFloats>("colorprint_heights")->values.clear();
 }
 
 void Plater::priv::mirror(Axis axis)
diff --git a/src/slic3r/GUI/wxExtensions.cpp b/src/slic3r/GUI/wxExtensions.cpp
index 0aea5dc04..4b9742220 100644
--- a/src/slic3r/GUI/wxExtensions.cpp
+++ b/src/slic3r/GUI/wxExtensions.cpp
@@ -1569,7 +1569,8 @@ void PrusaDoubleSlider::draw_info_line_with_icon(wxDC& dc, const wxPoint& pos, c
         dc.DrawLine(pt_beg, pt_end);
 
         //draw action icon
-        draw_action_icon(dc, pt_beg, pt_end);
+        if (m_is_enabled_tick_manipulation)
+            draw_action_icon(dc, pt_beg, pt_end);
     }
 }
 
@@ -1677,7 +1678,7 @@ void PrusaDoubleSlider::draw_thumbs(wxDC& dc, const wxCoord& lower_pos, const wx
 
 void PrusaDoubleSlider::draw_ticks(wxDC& dc)
 {
-    dc.SetPen(DARK_GREY_PEN);
+    dc.SetPen(m_is_enabled_tick_manipulation ? DARK_GREY_PEN : LIGHT_GREY_PEN );
     int height, width;
     get_size(&width, &height);
     const wxCoord mid = is_horizontal() ? 0.5*height : 0.5*width;
@@ -1794,7 +1795,7 @@ void PrusaDoubleSlider::OnLeftDown(wxMouseEvent& event)
     this->CaptureMouse();
     wxClientDC dc(this);
     wxPoint pos = event.GetLogicalPosition(dc);
-    if (is_point_in_rect(pos, m_rect_tick_action)) {
+    if (is_point_in_rect(pos, m_rect_tick_action) && m_is_enabled_tick_manipulation) {
         action_tick(taOnIcon);
         return;
     }
@@ -1812,7 +1813,7 @@ void PrusaDoubleSlider::OnLeftDown(wxMouseEvent& event)
     else
         detect_selected_slider(pos);
 
-    if (!m_selection) {
+    if (!m_selection && m_is_enabled_tick_manipulation) {
         const auto tick = is_point_near_tick(pos);
         if (tick >= 0)
         {
diff --git a/src/slic3r/GUI/wxExtensions.hpp b/src/slic3r/GUI/wxExtensions.hpp
index 27d233e6f..4829a0aef 100644
--- a/src/slic3r/GUI/wxExtensions.hpp
+++ b/src/slic3r/GUI/wxExtensions.hpp
@@ -683,6 +683,12 @@ public:
     void ChangeOneLayerLock();
     std::vector<double> GetTicksValues() const;
     void SetTicksValues(const std::vector<double>& heights);
+    void EnableTickManipulation(bool enable = true) {
+        m_is_enabled_tick_manipulation = enable;
+    }
+    void DisableTickManipulation() {
+        EnableTickManipulation(false);
+    }
 
     void OnPaint(wxPaintEvent& ) { render();}
     void OnLeftDown(wxMouseEvent& event);
@@ -753,6 +759,7 @@ private:
     bool        m_is_focused = false;
     bool        m_is_action_icon_focesed = false;
     bool        m_is_one_layer_icon_focesed = false;
+    bool        m_is_enabled_tick_manipulation = true;
 
     wxRect      m_rect_lower_thumb;
     wxRect      m_rect_higher_thumb;