jquery/jquery-mobile — Issue #2689: White line above first child in list view
Author: smwald
Created: 2011-10-13 04:07:42+00:00
State: open

For more detail please visit: http://forum.jquery.com/topic/white-line-above-listview

I've found a solution as well... it looks like the CSS given is this:
.ui-field-contain:first-child{border-top-width:0}

but we need to add one more class to the CSS field:
.ui-li:first-child,.ui-field-contain:first-child{border-top-width:0}

Which then eliminates the top line from the first element in the list.