viewing problem in ib_ebit containing time value

if the ib_edit hasn't recieve the focus the time value appears to be
right. for example it has a value of 8:45 AM, the ib_edit appearance
has no problem at all, but when it recieve its focus, the ib_edit
appears to look like this _8:00 AM. And when the ib_edit loss its
focus the ib_edit will appears to look correct. it's not a serious
thing but I found it annoying.

here is the setting for the time field under the ib_query field
proerties

edit mask = !90:00> LL;1;_



Anybody knows what have I done wrong?