I’m change meta title publish page and search page use this code

<?php
function wm_custom_meta_title($title) {
    if(Params::getParam('page') == 'search') {
        return __('All listings');
    } else if(Params::getParam('action') == 'item_add') {
        return __('Publish a listing');
    }

    return $title;
}
osc_add_filter('meta_title_filter', 'wm_custom_meta_title');


After install this plugin change title not showing

@Web
Because plugin use same hook, try to add 1 as last parameter in add filter function or modify it in plugin

@mbthemes

Add 1 but not working

Now try 10

@mbthemes

Not working

@Web
Ok, then only way is to update it directly in index.php and put into meta title condition your owns.

Solved