MFP algorithm lengthens overlapping notes at tail end of files

[NyuBlara]

Take the last measure of Dvorak's silhouette n°4 (op08n04.zip) :

The dotted half-note should end before the fermata-bearing half-note chords that closes the piece (a fermata is interpreted as multiplying duration by 2).

However, this is the same measure as viewed in the piano roll.

This is because the last two sets of the piece are the end set of the dotted half-note followed by that of the fermata chords :

And thus, they are merged by the MFP lib, and the dotted note lasts longer.