KeyError: 'status' on New Ticket page

[matobaa]

File "C:/Python27/lib/site-packages/trac/web/main.py", line 623, in _dispatch_request
  dispatcher.dispatch(req)
File "C:/Python27/lib/site-packages/trac/web/main.py", line 259, in dispatch
  iterable=chrome.use_chunked_encoding)
File "C:/Python27/lib/site-packages/trac/web/chrome.py", line 1129, in render_template
  stream |= self._filter_stream(req, method, filename, stream, data)
File "C:/Python27/lib/site-packages/genshi/core.py", line 133, in __or__
  return Stream(_ensure(function(self)), serializer=self.serializer)
File "C:/Python27/lib/site-packages/trac/web/chrome.py", line 1442, in inner
  data)
File "C:/workspace/trac/src/contextchrome/contextchrome/ticketvalidator.py", line 85, in filter_stream
  status = 'ticket' in data and data['ticket'].values['status'] or 'sentinel'

[matobaa]

In 16907:

Fixes #13308