diff --git a/src/libslic3r/TriangleSelector.cpp b/src/libslic3r/TriangleSelector.cpp
index 758b3ab4d..9e16c0317 100644
--- a/src/libslic3r/TriangleSelector.cpp
+++ b/src/libslic3r/TriangleSelector.cpp
@@ -178,12 +178,12 @@ void TriangleSelector::select_patch(const Vec3f& hit, int facet_start,
     }
 }
 
-void TriangleSelector::seed_fill_select_triangles(const Vec3f &hit, int facet_start, float seed_fill_angle)
+void TriangleSelector::seed_fill_select_triangles(const Vec3f &hit, int facet_start, float seed_fill_angle, bool force_reselection)
 {
     assert(facet_start < m_orig_size_indices);
 
     // Recompute seed fill only if the cursor is pointing on facet unselected by seed fill.
-    if (int start_facet_idx = select_unsplit_triangle(hit, facet_start); start_facet_idx >= 0 && m_triangles[start_facet_idx].is_selected_by_seed_fill())
+    if (int start_facet_idx = select_unsplit_triangle(hit, facet_start); start_facet_idx >= 0 && m_triangles[start_facet_idx].is_selected_by_seed_fill() && !force_reselection)
         return;
 
     this->seed_fill_unselect_all_triangles();
@@ -278,7 +278,7 @@ void TriangleSelector::append_touching_subtriangles(int itriangle, int vertexi,
         return;
 
     auto process_subtriangle = [this, &itriangle, &vertexi, &vertexj, &touching_subtriangles_out](const int subtriangle_idx, Partition partition) -> void {
-        assert(subtriangle_idx == -1);
+        assert(subtriangle_idx != -1);
         if (!m_triangles[subtriangle_idx].is_split())
             touching_subtriangles_out.emplace_back(subtriangle_idx);
         else if (int midpoint = this->triangle_midpoint(itriangle, vertexi, vertexj); midpoint != -1)
@@ -312,7 +312,7 @@ void TriangleSelector::bucket_fill_select_triangles(const Vec3f& hit, int facet_
     }
 
     auto get_all_touching_triangles = [this](int facet_idx, const Vec3i &neighbors, const Vec3i &neighbors_propagated) -> std::vector<int> {
-        assert(facet_idx != -1 && facet_idx < m_triangles.size());
+        assert(facet_idx != -1 && facet_idx < int(m_triangles.size()));
         assert(this->verify_triangle_neighbors(m_triangles[facet_idx], neighbors));
         std::vector<int> touching_triangles;
         Vec3i            vertices = {m_triangles[facet_idx].verts_idxs[0], m_triangles[facet_idx].verts_idxs[1], m_triangles[facet_idx].verts_idxs[2]};
diff --git a/src/libslic3r/TriangleSelector.hpp b/src/libslic3r/TriangleSelector.hpp
index eeb479dee..39c1ad22e 100644
--- a/src/libslic3r/TriangleSelector.hpp
+++ b/src/libslic3r/TriangleSelector.hpp
@@ -49,7 +49,8 @@ public:
 
     void seed_fill_select_triangles(const Vec3f &hit,               // point where to start
                                     int          facet_start,       // facet of the original mesh (unsplit) that the hit point belongs to
-                                    float        seed_fill_angle);  // the maximal angle between two facets to be painted by the same color
+                                    float        seed_fill_angle,   // the maximal angle between two facets to be painted by the same color
+                                    bool         force_reselection = false); // force reselection of the triangle mesh even in cases that mouse is pointing on the selected triangle
 
     void bucket_fill_select_triangles(const Vec3f &hit,             // point where to start
                                     int          facet_start,       // facet of the original mesh (unsplit) that the hit point belongs to
diff --git a/src/slic3r/GUI/Gizmos/GLGizmoPainterBase.cpp b/src/slic3r/GUI/Gizmos/GLGizmoPainterBase.cpp
index 6d3d162b7..1045ac9e6 100644
--- a/src/slic3r/GUI/Gizmos/GLGizmoPainterBase.cpp
+++ b/src/slic3r/GUI/Gizmos/GLGizmoPainterBase.cpp
@@ -292,6 +292,11 @@ bool GLGizmoPainterBase::gizmo_event(SLAGizmoEventType action, const Vec2d& mous
                 m_seed_fill_angle = action == SLAGizmoEventType::MouseWheelDown ? std::max(m_seed_fill_angle - SeedFillAngleStep, SeedFillAngleMin)
                                                                                 : std::min(m_seed_fill_angle + SeedFillAngleStep, SeedFillAngleMax);
                 m_parent.set_as_dirty();
+                if (m_rr.mesh_id != -1) {
+                    m_triangle_selectors[m_rr.mesh_id]->seed_fill_select_triangles(m_rr.hit, int(m_rr.facet), m_seed_fill_angle, true);
+                    m_triangle_selectors[m_rr.mesh_id]->request_update_render_data();
+                    m_seed_fill_last_mesh_id = m_rr.mesh_id;
+                }
                 return true;
             }