diff --git a/src/node_combobox.cpp b/src/node_combobox.cpp
index fefa424..62ebd59 100644
--- a/src/node_combobox.cpp
+++ b/src/node_combobox.cpp
@@ -30,6 +30,7 @@ void NodeComboBox::loaded()
         popup->loaded();
         root()->add_child(popup);
         m_items.clear();
+        int real_index = 0;
         for (int i = 0; i < m_data.size(); i++)
         {
             if (m_data[i] == "-")
@@ -46,6 +47,8 @@ void NodeComboBox::loaded()
                 btn->m_border->SetWidthP(100.f);
                 btn->m_border->SetHeight(30.f);
                 int index = (int)m_items.size();
+                if (index == m_current_index)
+                    m_selected_child_index = popup->get_child_index(btn);
                 m_items.push_back(m_data[i]);
                 btn->on_click = [this,popup,btn,index](Node* target) {
                     m_current_index = index;
@@ -103,7 +106,6 @@ void NodeComboBox::parse_attributes(kAttribute ka, const tinyxml2::XMLAttribute*
 void NodeComboBox::set_index(int index)
 {
     m_current_index = index;
-    m_selected_child_index = index;
     m_text->set_text(m_items[index].c_str());
     //if (on_select)
     //    on_select(this, index);
diff --git a/src/node_stroke_preview.cpp b/src/node_stroke_preview.cpp
index 09df855..b5a0bf8 100644
--- a/src/node_stroke_preview.cpp
+++ b/src/node_stroke_preview.cpp
@@ -378,7 +378,7 @@ void NodeStrokePreview::draw_stroke()
 
     // copy background color to tex2
     ShaderManager::use(kShader::Checkerboard);
-    ShaderManager::u_int(kShaderUniform::Colorize, b->m_tip_mix > 0.f);
+    ShaderManager::u_int(kShaderUniform::Colorize, b->m_tip_mix > 0.f || b->m_blend_mode != 0);
     float aspect = size.x / size.y;
     ShaderManager::u_mat4(kShaderUniform::MVP, glm::ortho(-.5f, .5f, -.5f / aspect, .5f / aspect, -1.f, 1.f));
     m_plane.draw_fill();