[Pharo-project] [update 2.0] #20580

[Marcus Denker]

20580
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Issue 7623:     Progressbar is not showing when it should
        http://code.google.com/p/pharo/issues/detail?id=7623


Diff information:
http://ss3.gemstone.com/ss/Pharo20/Morphic-MarcusDenker.1365.diff