getRowHeight() error ??

Hi,

i'am currently using a licenced version of active widget 2.5.3 developer.

There is a strange behaviour to get the correct row height.

var obj = new AW.UI.Grid;
document.write(obj);   
alert(obj.getRowHeight());
setTimeout("alert(obj.getRowHeight())",10000);

The first getRowHeight returns 18, the second one 20.
The displayed RowHeight ist 18 all the time.
After setting RowHeight to 18 via SetRowHeight(18) alert will always return 18.