DateTimeField and DateField do not set input tag "value"

DateTimeField and DateField do not properly set input tag "value" in the generated markup when a Date model is given. In the case of DateTimeField, only the hours and minutes fields have the proper "value" tag.

The problem seems to be located at DateTimeField#onBeforeRender(). The hours and minutes members are set in the else clause, but not the date member.