Ported from 2.4 branch:

Patch by Ori Avtalion to fix a minor display glitch in the RightArrow.
diff --git a/Tools/pynche/StripViewer.py b/Tools/pynche/StripViewer.py
index 8d17d55..01bcbf6 100644
--- a/Tools/pynche/StripViewer.py
+++ b/Tools/pynche/StripViewer.py
@@ -151,9 +151,9 @@
         return arrow, text
 
     def _x(self):
-        coords = self._canvas.bbox(self._TAG)
+        coords = self._canvas.coords(self._TAG)
         assert coords
-        return coords[2] - 6                      # BAW: kludge
+        return coords[0] + self._ARROWWIDTH