Did you changed timestamp mechanisms in FreeFileSync beetwen 5.12 and 5.14

Hello!
I use FreeFileSync for folder synchronization between my internal laptop HDD and my external USB-HDD (both with NTFS filesystem).
Let's assume a situation I changed some file on local HDD (left pane) and run FreeFileSync with my ext. HDD (right).
I press F5, got left-to-right ">" arrow. If I press F5 again I got right-to-left "<" arrow for the same file (right file is newer), but if I compare these folders by content - there are no differences.

I checked both my HDD with CHKDSK, they have no errors. I use Ubuntu 12.04.2 with all latest upgrades and FreeFileSync 5.14.
This is not filesystem problem (fuseblk, ntfs-3g) - if I copy files from terminal with 'cp --preserve=timestamp source target' they have correct timestamps.
I tried previous version of FreeFileSync (5.12-0ubuntu1~precise from your ppa), it works normally.

So my question is: did you changed timestamp mechanisms in FreeFileSync beetwen 5.12 and 5.14? It seems that problem is related to FreeFileSync, not my system configuration.