qannotate crashes on when selecting "working tree" within dialog

I have a local shared repository and within this respository I have a checkout of a branch.
Eg: (bzr init-repo repo; bzr checkout some/remote/branch repo/branch)
I then have a file in there called ExampleFile.txt,
I edit various parts of the file and commit each time.

Then I make some random changes to the file and before I commit:

Run "bzr qannotate ExampleFile.txt"

The nice qannotate dialog is shown. At the bottom half of the dialog is the graphical log of the file over its life time.
And the first node in the log is given a blue label called: "Working Tree".

Click on this label.

The result is the entire dialog crashes and the following error is shown in console:

bzr: ERROR: exceptions.AttributeError: 'WorkingTreeRevision' object has no attribute 'repository'

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/qbzr/lib/util.py", line 944, in run_in_loading_queue
    f(*args, **kargs)
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/qbzr/lib/uifactory.py", line 32, in decorate
    r = f(*args, **kargs)
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/qbzr/lib/revisionmessagebrowser.py", line 365, in update_selection
    revids, self.log_list.log_model.graph_viz.get_repo_revids)
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/qbzr/lib/revisionmessagebrowser.py", line 149, in set_display_revids
    pass_prev_loaded_rev=True)
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/qbzr/lib/lazycachedrevloader.py", line 53, in load_revisions
    revisions_loaded(return_revisions, False)
  File "/usr/lib/python2.7/dist-packages/bzrlib/plugins/qbzr/lib/revisionmessagebrowser.py", line 204, in revisions_loaded
    cached_revisions[revid].repository)
AttributeError: 'WorkingTreeRevision' object has no attribute 'repository'

bzr 2.6.0dev3 on python 2.7.4 (Linux-3.8.0-27-generic-x86_64-with-
    Ubuntu-13.04-raring)
arguments: ['/usr/bin/bzr', 'qannotate', 'ExampleFile']
plugins: bash_completion[2.6.0dev3], changelog_merge[2.6.0dev3],
    explorer[1.3.0], grep[2.6.0dev3], launchpad[2.6.0dev3],
    netrc_credential_store[2.6.0dev3], news_merge[2.6.0dev3],
    po_merge[2.6.0dev3], qbzr[0.23.0], weave_fmt[2.6.0dev3]
encoding: 'utf-8', fsenc: 'UTF-8', lang: 'en_ZA.UTF-8'

*** Bazaar has encountered an internal error. This probably indicates a
    bug in Bazaar. You can help us fix it by filing a bug report at
        https://bugs.launchpad.net/bzr/+filebug
    including this traceback and a description of the problem.