Since upgrading to 4.5.7, one user claims that her calendar day view now defaults to showing 1am at the top where is used to default to 7am or 8am (it would show the page partly scrolled down so that 7am or 8am is at the top of the viewable region).
I can't confirm that 4.5.6 did this because I don't have any 4.5.6 installations left.
I can verify that whenever I click to dayview, it is always scrolled to the top of the calendar at 1am.
Can anyone verify if zimbra <= 4.5.6 would display calendar day view with the top of the screen starting at 7am or 8am?
p.s., I've double checked time zone setting and those are correct, although I did notice that after the 4.5.7 upgrade, our default time zone for the COS was invalid and needed to be reset to a valid timezone (pacific for us).