Hi,
have you been searching for the answer how to disable shortening of long URL addresses in PHPBB forum posts?
Luckily its quite simple.
Find corresponding line in includes/functions_content.php:
$short_url = (strlen($url) > 55) ? substr($url, 0, 39) . ' ... ' . substr($url, -10) : $url;
If you want to completelly disable shortening of PHPBB long URLs, just replace the corresponding line by:
$short_url = $url;
Pls post there how it works for you.