diff --git a/.github/workflows/build_orca.yml b/.github/workflows/build_orca.yml
index 2846eff1d5..e6722e50e2 100644
--- a/.github/workflows/build_orca.yml
+++ b/.github/workflows/build_orca.yml
@@ -200,23 +200,9 @@ jobs:
 
       - name: Create installer Win
         if: matrix.os == 'windows-2019'
-        shell: pwsh
-        env:
-          BUILD_CERTIFICATE_BASE64: ${{ secrets.BUILD_CERTIFICATE_BASE64 }}
-          P12_PASSWORD: ${{ secrets.P12_PASSWORD }}
         working-directory: ${{ github.workspace }}/build
         run: |
-          # Decode the certificate
-          echo "$BUILD_CERTIFICATE_BASE64" | base64 -d > certificate.p12
-          # Sign all .exe and .dll files in the specified folder
-          # Decode the certificate
-          [System.Convert]::FromBase64String($env:BUILD_CERTIFICATE_BASE64) | Set-Content -AsByteStream -Path certificate.p12
-          Get-ChildItem -Path OrcaSlicer -Include *.exe,*.dll -Recurse | ForEach-Object {
-            & "C:/Program Files (x86)/Microsoft SDKs/ClickOnce/SignTool/signtool.exe" sign /fd sha256 /f certificate.p12 /p $env:P12_PASSWORD $_.FullName
-          }
           cpack -G NSIS
-          ls "${{ github.workspace }}/build"
-          "C:/Program Files (x86)/Microsoft SDKs/ClickOnce/SignTool/signtool.exe/signtool.exe" sign /fd sha256 /f certificate.p12 /p $P12_PASSWORD  "${{ github.workspace }}/build/OrcaSlicer_Windows_Installer_${{ env.ver }}.exe"
 
       # - name: pack app
         # if: matrix.os == 'windows-2019'
diff --git a/src/slic3r/GUI/GCodeViewer.cpp b/src/slic3r/GUI/GCodeViewer.cpp
index 9ee5eb4041..6c0954a268 100644
--- a/src/slic3r/GUI/GCodeViewer.cpp
+++ b/src/slic3r/GUI/GCodeViewer.cpp
@@ -3196,26 +3196,27 @@ void GCodeViewer::load_shells(const Print& print, bool initialized, bool force_p
         object_count++;
     }
 
-    if (wxGetApp().preset_bundle->printers.get_edited_preset().printer_technology() == ptFFF) {
-        // BBS: adds wipe tower's volume
-        std::vector<unsigned int> print_extruders = print.extruders(true);
-        int extruders_count = print_extruders.size();
+    // Orca: disable wipe tower shell
+    // if (wxGetApp().preset_bundle->printers.get_edited_preset().printer_technology() == ptFFF) {
+    //     // BBS: adds wipe tower's volume
+    //     std::vector<unsigned int> print_extruders = print.extruders(true);
+    //     int extruders_count = print_extruders.size();
 
-        const double max_z = print.objects()[0]->model_object()->get_model()->bounding_box().max(2);
-        const PrintConfig& config = print.config();
-        if (config.enable_prime_tower &&
-            (print.enable_timelapse_print() || (extruders_count > 1 && (config.print_sequence == PrintSequence::ByLayer)))) {
-            const float depth = print.wipe_tower_data(extruders_count).depth;
-            const float brim_width = print.wipe_tower_data(extruders_count).brim_width;
+    //     const double max_z = print.objects()[0]->model_object()->get_model()->bounding_box().max(2);
+    //     const PrintConfig& config = print.config();
+    //     if (config.enable_prime_tower &&
+    //         (print.enable_timelapse_print() || (extruders_count > 1 && (config.print_sequence == PrintSequence::ByLayer)))) {
+    //         const float depth = print.wipe_tower_data(extruders_count).depth;
+    //         const float brim_width = print.wipe_tower_data(extruders_count).brim_width;
 
-            int plate_idx = print.get_plate_index();
-            Vec3d plate_origin = print.get_plate_origin();
-            double wipe_tower_x = config.wipe_tower_x.get_at(plate_idx) + plate_origin(0);
-            double wipe_tower_y = config.wipe_tower_y.get_at(plate_idx) + plate_origin(1);
-            m_shells.volumes.load_wipe_tower_preview(1000, wipe_tower_x, wipe_tower_y, config.prime_tower_width, depth, max_z, config.wipe_tower_rotation_angle,
-                !print.is_step_done(psWipeTower), brim_width, initialized);
-        }
-    }
+    //         int plate_idx = print.get_plate_index();
+    //         Vec3d plate_origin = print.get_plate_origin();
+    //         double wipe_tower_x = config.wipe_tower_x.get_at(plate_idx) + plate_origin(0);
+    //         double wipe_tower_y = config.wipe_tower_y.get_at(plate_idx) + plate_origin(1);
+    //         m_shells.volumes.load_wipe_tower_preview(1000, wipe_tower_x, wipe_tower_y, config.prime_tower_width, depth, max_z, config.wipe_tower_rotation_angle,
+    //             !print.is_step_done(psWipeTower), brim_width, initialized);
+    //     }
+    // }
 
     // remove modifiers
     while (true) {
@@ -4138,7 +4139,7 @@ void GCodeViewer::render_shells()
     m_shells.volumes.render(GLVolumeCollection::ERenderType::Transparent, false, wxGetApp().plater()->get_camera().get_view_matrix());
     shader->stop_using();
 
-//    glsafe(::glDepthMask(GL_TRUE));
+    //    glsafe(::glDepthMask(GL_TRUE));
 }
 
 //BBS