v 1.0.2 doesn't display primary menu when searching

It’s a bug in v1.0.2 (v0.9.8 is ok, nav menus won’t disappear after search).

I can reproduce this bug without other plugins, with Twenty eleven theme and WP v3.5.1.

I found a (temporary) solution (add this to your theme’s functions.php):

add_filter( 'pre_get_posts', 'pll102_menu_repair' );
function pll102_menu_repair( $query ) {
	if(isset($query->query_vars['lang']) && is_search() && !$query->is_search) unset($query->query_vars['lang']);
	return $query;
}

I think this is the root of the bug:
(Polylang v1.0.2 – include/core.php – Polylang_Core::pre_get_posts() ):

// sets the language in case we hide the default language
	if ($this->options['hide_default'] && !isset($qv['lang']) && ($is_archive || is_search() || (count($query->query) == 1 && !empty($qv['feed'])) ))
		$query->set('lang', $this->options['default_lang']);

It would be better ( is_search() -> $q->is_search ):

if ($this->options['hide_default'] && !isset($qv['lang']) && ($is_archive || $q->is_search || (count($query->query) == 1 && !empty($qv['feed'])) ))
		$query->set('lang', $this->options['default_lang']);

But don’t forget: it’s a great plugin from a great developer!

Thanks for the bug report and fix. I will change this in the next version.

Sorry i made a mistake in the 1st reply, the ‘pre_get_posts’ hook is an action, not a filter, so the better temporary fix is:

add_action( 'pre_get_posts', 'pll102_menu_repair' );
function pll102_menu_repair( $query ) {
	if(isset($query->query_vars['lang']) && is_search() && !$query->is_search) unset($query->query_vars['lang']);
}