Comment #5 on issue 698 by alexandr...(a)gmail.com: Mondrian does not
properly raise MOElementSelection
http://code.google.com/p/moose-technology/issues/detail?id=698
This is not reproducible in Pharo 1.4. Apparently, the problem comes from a
shift by -1@0 when I click (it goes through MOCanvas>>mouseOver:)
Really weird behavior.