[otrs] Subject wrapping problem OTRS 2.2.8

Hi all, I have recently upgraded to OTRS 2.2.8 and have noticed that the subject field gets wrapped at 75 characters. One of my mail clients cannot handle the newline and drops the rest of the subject. Using Thunderbird I am able to see the entire subject, and if i view the message source, I see that the message wraps at the closest space in words around character 75. I have tested this by creating a ticket with subject "1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 ..." and confirmed that the subject wraps at 75 characters. Is this a config setting that can be changed, or is it hard coded? I cannot find anything specific to the subject. Any help much appreciated. Patric