Missing hidden users when using croatian langugae pack

Since i updated to version 3.0.1 from version 3.0.0 hidden users are not displayed in online bar
http://nasciturus.com/forum/viewonline.php

We are using Croatian language pack,when we switch to english pack,users are displayed normaly.
So basically this happens,

Ukupno je: 3 korisnika/ca online; 0 registriranih, 2 gostiju

The hidden user is not written on the bar,even though we have a hidden user. This is probably some mistake in the language pack. before the update,everything was working fine