update UTI, remove blur from CompDraw mask

src/canvas_modes.h

@@ -82,7 +82,7 @@ class CanvasModePen : public CanvasMode
     // resizing the tip
     bool m_resizing = false;
 public:
-    CanvasModePen() { hide_curor = true; }
+    CanvasModePen() { hide_curor = true; m_picking = false; }
     
     virtual void on_GestureEvent(GestureEvent* ge) override;
     virtual void on_MouseEvent(MouseEvent* me, glm::vec2& loc) override;