Many of the bugs I enter include either sample command lines or debugging output. The current bugzilla wraps these lines where the previous version did not (see attached screen shots). Ideally the wrapping should be based on the width the user's browser window, but just having it as wide as the previous bugzilla would be good enough.
Created attachment 6034 [details] new.png
Created attachment 6035 [details] old.png
Changing: use constant COMMENT_COLS => 80; in Bugzilla/Constants.pm doesn't seem to do anything (perhaps this file isn't automatically re-read?).
Removing the 'FILTER wrap_comment' near the end of comments.html.tmpl helps, but not enough and I'm not happy removing code I don't understand.
Bugzilla appears to be willing to display comments outside the box (if it thinks they are replies to previous comments), see Bug #691161
You are running under mod_perl. If you make code changes, you must restart httpd for them to take effect.
I've changed the COMMENT_COLS value and restarted httpd (actually I restarted apache2, but I'm thinking that's the same thing).
Fixed by changing the value in Constants.pm and restarting apache2.
After more testing this change caused problems with blocks of text, so I've reverted it and ill just live with the wrapping of command lines.