Sometimes the automatic formatting for URL links attempts to shorten the link and breaks it in the process. For example a link to the bug reports page should appear like this: https://www.ultimate-guitar.com/forum/forumdisplay.php?f=66
but will sometimes appear like this http://www.ultimate-guitar.com/f...f=66 which breaks the link.
Its happens only on forum? Can you show page with this broken link?