fix redraw of automation ControlPoints

diff --git a/libs/canvas/rectangle.cc b/libs/canvas/rectangle.cc
index 557e8763c7e42e39ee9b0eca2e51a0ec838173e4..07288d5d3331acb228dba0755423b9190ce58cee 100644 (file)
--- a/libs/canvas/rectangle.cc
+++ b/libs/canvas/rectangle.cc
@@ -181,7 +181,7 @@ Rectangle::compute_bounding_box () const
                   than the rectangle itself.
                */
 
-               _bounding_box = r.expand (_outline_width * 0.5);
+               _bounding_box = r.expand (1.0 + _outline_width * 0.5);
        }
 
        _bounding_box_dirty = false;