Private translations export branches break productseries translation page

Accessing this URL
https://translations.edge.launchpad.net/canonical-payment-service/trunk
gives me the following traceback. Ideally the page should be displayed with the branch name hidden in some way.

/srv/edge.launchpad.net/edge/launchpad-rev-11546/lib/lp/translations/browser/../templates/productseries-translations.pt
Line 98, Column 11
Expression: <PathExpr standard:u'context/translations_branch/fmt:link'>
   - Names:
      {'args': (),
       'context': <ProductSeries at 0x2b7501385e90>,
       'default': <object object at 0x2b74df58b220>,
       'loop': {},
       'nothing': None,
       'options': {},
       'repeat': {},
       'request': <lp.translations.publisher.TranslationsBrowserRequest instance URL=https://translations.edge.launchpad.net/canonical-payment-service/trunk/+translations>,
       'template': <z3c.ptcompat.ViewPageTemplateFile object at 0x997f350>,
       'view': <zope.browserpage.metaconfigure.SimpleViewClass from /srv/edge.launchpad.net/edge/launchpad-rev-11546/lib/lp/translations/browser/../templates/productseries-translations.pt object at 0x2b74f53a62d0>,
       'views': <zope.app.pagetemplate.viewpagetemplatefile.ViewMapper object at 0x2b74f53a6f90>}
Module zope.tales.expressions, line 217, in __call__
return self._eval(econtext)
Module zope.tales.expressions, line 194, in _eval
ob = self._subexprs[-1](econtext)
Module zope.tales.expressions, line 124, in _eval
ob = self._traverser(ob, element, econtext)
Module zope.pagetemplate.engine, line 68, in __call__
request=request)
Module zope.traversing.adapters, line 138, in traversePathElement
return traversable.traverse(nm, further_path)
__traceback_info__: (<canonical.launchpad.webapp.tales.BranchFormatterAPI object at 0x2b7500741a90>, 'link')
Module canonical.launchpad.webapp.tales, line 509, in traverse
return getattr(self, method_name)(extra_path)
Module canonical.launchpad.webapp.tales, line 1425, in link
'%(display_name)s</a>' % self._args(view_name))
Module canonical.launchpad.webapp.tales, line 1414, in _args
'bzr_identity': branch.bzr_identity,
Unauthorized: (<Branch u'~canonical-isd-hackers/canonical-payment-service/translations' (371855)>, 'bzr_identity', 'launchpad.View')<br />