[Evolution] All-Day Event bug?

[Chris Boyce <chris boyce berbee com>]

I'm running 2.12.2 (with Exchange) and recently noticed that editing an
existing all-day event causes that event's time/day range to go berserk.
It's easy to re-create:

1. Create an all-day event and save.  Everything looks OK.
2. Open the event, make a simple change, such as adding some text to the
Summary...  When I save it, it changes from all-day to a specified time
range, spanning two days.
3. Subsequent attempts to repair - ie. change back to all-day and fix
the day range back to 1 day - are futile and the appointment refuses to
go back to 1 day.

It appears - possibly - the All-Day "toggle" won't stick.  It always
reverts to a time-based appointment.

Apologies if this has been covered already... Let me know if I should
file a bug.

thanks!

-- 
Chris Boyce