musescore/MuseScore — pull request #544 by AntonioBL (2013-11-14 14:20:07+00:00)
Title: avoid dots for notes which may result in 256th notes/rests or shorter

This is just a tentative implementation to avoid problems such as:
http://musescore.org/node/23473
http://musescore.org/en/node/9077
I don't know if there may be other possible extreme cases in which these short-notes-problems may arise.