MAT reporting file as unclean after cleaning
This is in the debian wheezy version of mat. mat 0.3.2-1
$> mat file.png [+] Cleaning file.png file.png cleaned !
$> mat -c file.png [+] file.png is not clean
$> mat -d file.png Harmful metadata found: Significant Bits : 8 8 8 8
(from redmine: created on 2014-11-30, closed on 2015-04-12)