In the 'Revisions Waiting on You' section of my front page, I have a series of 17 revisions, in a mix of accepted, changes-planned, and unreviewed. The accepted and changes-planned revisions render correctly, however the unreviewed revisions are shown twice.

With the following status:
Accepted: D1, D5, D6, D7, D9, D12
Changes planned: D2, D3, D4, D8, D10, D11
Unreviewed: D13, D14, D15, D16, D17

I get the following list, in this order:
D13
D14
D15
D16
D17 <- everything here to above is unreviewed
D12
D11
[... D10-D3 elided ...]
D2 <- everything between the above note and here is accepted or changes-planned
D17
D16
D15
D14
D13 <- note repetition of D17-D13, in reverse order
D1

D13-17 definitely shouldn't be repeated, and the difference in ordering between the two instances also seems odd.

One possible cause of this is that I am both the submitter and the reviewer for these revisions.

You can look at these yourself at http://phabricator.freedesktop.org/differential/ - if there's any more information (or access) that would help, please let me know.