No bug, jist coded that way if you look at the sidebar.php file:
`
if(!getOption("zenpage_zp_index_news") OR !getOption("zenpage_homepage")) {
$allalbums = "";
} else {
$allalbums = gettext("Gallery index");
}
printAlbumMenu("list",NULL,"","menu-active","submenu","menu-active",$allalbums,false,false);
`