[Velocd]

This is due to how the forum cache mechanism works.

PHP Code:

From functions.php

function fetch_foruminfo(&$forumid, $usecache = true)
{
    global $DB_site, $_FORUMOPTIONS;
    global $forumcache;

    $forumid = intval($forumid);
    if (!$usecache OR !isset($forumcache["$forumid"]))
    {
        $forumcache["$forumid"] = $DB_site->query_first("
            SELECT *
            FROM " . TABLE_PREFIX . "forum
            WHERE forumid = $forumid
        ");
    } 


If you add a custom field, it wont be available in that forums existing cache.

If you modified it to be:

PHP Code:

    global $forumcache;

$usecache = 0;

    $forumid = intval($forumid);
    if (!$usecache OR !isset($forumcache["$forumid"]))
    { 


But, this would affect the caching system and wouldn't be a good thing.

Unfortunantly I don't know of the correct work around, I haven't messed with the forum table much in vB3.

It seems in functions_forumlist.php:

PHP Code:

function cache_ordered_forums($getcounters = 0, $getinvisibles = 0, $userid = 0)
{
    global $DB_site, $iforumcache, $forumcache, $_FORUMOPTIONS, $bbuserinfo;

    $forumfields = 'forum.forumid, lastpost, lastposter, lastthread, lastthreadid, lasticonid, threadcount, replycount'; 


Although it doesn't seem the $forumfields affects anything. :ermm: