stash fails to display reviews/commits where commit message includes <U+2028>

One of our developers managed to use a strange unicode character in his commit message. On the console in OS X, it displays as '<U+2028>'.

Once this was pushed and he opened a review request in stash, the review request appeared almost completely blank, and none of the buttons did anything when pushed.

When trying to view the commit, the commit also appeared empty.

We got him to amend the commit, and the commit is now visible in the commit viewer, but the review is still empty and the buttons still do nothing when pushed.

Not yet sure how to fix this. The pull request 'decline' button does not work, nor do any of the other buttons, and a new pull request can't be opened (get an error: There is already a pull request open between refs/heads/cal-46-ios-NewCallNotification and refs/heads/master. View the pull request.)

This seems to be the problem text: "llsme.
Rece" (the character between the '.' and the 'R')