highlighting problem in moc-2.4.0

When I highlight some songs, the highlight exceeds its pane.
The problem appears when ReadTags is set and also when it isn't.

It's probably caused by some encoding problem because there is no sign of bad
behaviour when playing english spelled files.

You can see it here: http://zp.emdej.com/~mdj/moc24/
http://zp.emdej.com/~mdj/moc24/sample.mp3 - it's a sample file

I'm using Gentoo, but the problem appears also when I downloaded and compiled moc sources manually.