(This may be an upstream bug, but since upstream is apparently phasing it out, I'm not sure it's worth reporting there.) Starting around February 5 and still going on as of a few minutes ago, visiting https://reviews.freebsd.org/D34099/new/ while logged in as myself results in a pop-up reading: Unhandled Exception ("Exception") Found unknown intradiff source line, expected a line beginning with "+", "-", or " " (space): \ No newline at end of file