This may only be because of the Mac version of GitHub.
_{Issue JRA-123 was used as example and is not actually linked to this issue}

Steps To Reproduce
Starting with a project connect to GitHub:

• Commit a set of changes with an "extended description" of more than one full line with smart commit tags: e.g.
  JRA-123 #time 2h #resolve This is quite a lengthy commit message to ensure that it takes up more than one line in the "extended description" box of GitHub. Although the box can be extended, this still causes trouble for particularly long commit comments
• View the issue at it's browse link and view the comments tab.

Expected Outcome

• The entire comment has been pulled from GitHub and added as a comment

Actual Outcome

• Only part of the comment, upto an apparent \n has been added