Dbms_output window text lines are truncated at some rather random looking line length. It's not truncated at a certain number of characters as the last character is actually sliced in half. It's not sliced at the width of the window either.
WORKAROUND:
None
STATUS:
Issue fixed in version 5.5.2.742. The latest version of SQL Navigator for Oracle can be downloaded at: http://support.quest.com/support_download/Downloads.asp. Please see solution #17322 for downloading instructions.