dunno whether this is an issue in newer gerrit versions or just of the installation on gerrit-review.googlesource.com.
the mails gerrit sends out contain this line:
Content-Type: text/plain; charset=ISO-8859-1; format=flowed; delsp=yes
the flowed format makes no sense at all - these mails are (or at least should be) preformatted anyway.
additionally, the flowing actually breaks things - for example the file list below the commit message wraps lines with long file names, which impacts its legibility. diffs being wrapped also seems rather wrong.