[Evolution] Threaded sorting change -- on purpose or bug or have I lost preferences setting someplace?

[Reid Thompson <Reid Thompson ateb com>]

Is anyone else seeing this?

Using OWA Exchange.
Not sure as to when this change occurred, but it's fairly recent.

Prior behavior:
View sorted by date and threaded.
Emails are sorted based on the timestamp of the latest email in the
thread.  

Current behavior:
View sorted by date and threaded.
Emails are sorted based on the timestamp of the earliest email in the
thread.

I much prefer the prior behavior.

Thanks,
reid