Shrink selection bug

[miguelps]

It apparently does not work for more than 10 masks.
For example:
Unselecting this
*.avi;*.z;*.pdf;*.chm;*.iso;*.doc*;*.rar;*.zip;*.exe;*.jpg;*.nrg;*.srt;*.txt;*.pps;*.msi;*.mp3;*.7z;*.reg
only works until *.jpg
but not from *.nrg

The counterpart: selecting files, works ok.
Miguel