[Revan]

Works for me, I just tested it on Gold version. Did you try to overwrite Kirby's version with this or something?
Either ways, you can try this, though: Open up the "Plugin System Adjustments" plugin, and change it to this:

PHP Code:

if (preg_match('/plugin\.php$/', $_SERVER['PHP_SELF']))
{
    if (!$_REQUEST['do'] OR $_REQUEST['do'] == 'modify' OR $_REQUEST['do'] == 'product')
    {
        exec_header_redirect('advplugins.php');
    }
    if ($_REQUEST['do'] == 'updateactive')
    {
        function plugin_updateactive_handler()
        {
            exec_header_redirect('advplugins.php');
        }
        ob_start('plugin_updateactive_handler');
    }
    if ($_REQUEST['do'] == 'edit' OR $_REQUEST['do'] == 'add')
    {
        if (!function_exists('plugin_edit_handler'))
        {
            function plugin_edit_handler($output)
            {
                global $vbphrase, $vbulletin;
    
                $output = str_replace("<input type=\"reset\"", "<input type=\"submit\" class=\"button\" tabindex=\"1\" name=\"return\" value=\"$vbphrase[save] &amp; $vbphrase[reload]\" accesskey=\"e\" />\n<input type=\"reset\"", $output);
                return $output;
            }
        }
        ob_start('plugin_edit_handler');
        $vbulletin->nozip = true;
    }
    if ($_REQUEST['do'] == 'update' AND $_REQUEST['return'])
    {
        function plugin_update_handler($output)
        {
            global $_REQUEST;
            return str_replace('plugin.php', 'plugin.php?do=edit&pluginid=' . $_REQUEST[pluginid], $output);
        }
        $vbulletin->nozip = true;
        ob_start('plugin_update_handler');
    }
} 


See if that makes it go away

@others: Thanks for the nice comments, makes it all worth it

@Bad Bunny: I think your point was just proved