I created a full day event on saturday called test. When I take a look at my agenda using the external URL (http://zimbraserver/home/user/Calendar.html?view=week), the previous meeting appears both on friday AND saturday, but if I show only work week, then it doesn't appear on friday. If I click on the meeting to see the details, the good informatino are displayed.
It must probably be a timezone problem, but everything seems ok in the zimbra admin : users timezone is the same as domain timezone, and I don't see where it could be different.
It seems that this bug only appeared after migration from 6.0.3 to 6.0.4.
I filed a bug for this, you can find it here (some screenshots included to be more clear) : bugzilla
If anyone has any idea, I would be grateful !
Thanks in advance !