The bug still appears to be showing when 'Static students column' is ticked.
Sorry - I just saw the 'fix for 1.9.6' - I was testing latest 1.9.5+ build. Ignore my previous comment
Michael, thanks for testing.
As the fix for this issue was committed on 28 August, it should have been included in last Wednesday's 1.9.5+. Reopening based on your comment.
var header_cell_region = YAHOO.util.Dom.getRegion(rows[rows.length-1].firstChild);
var header_cell_region = YAHOO.util.Dom.getRegion();
just means header_cell_region will always equal false.
I have a fix for this. Waiting for 1.9.7 to be out the door before committing.