combo template not closing in Firefox

I would assume this fix would have been incorporated into the latest ActiveWidgets, but I am still getting this bug (using 2.5.3):

http://www.activewidgets.com/javascript.forum.13299.8/fix-combo-template-not-closing.html

In particular, I tried out exactly this example:

http://www.activewidgets.com/javascript.forum.11330.13/rc1-example-question-combo-in.html

and it works fine in IE, but is buggy in FF (the popups do not close in FF).

What is the deal with a fix for this?

Alternatively, I tried AW.UI.Combo and it works fine (doesn't have this bug), but the problem with it is, if I put many different AW.UI.Combo objects in different grid cells, how I can I determine which grid cell a particular selected AW.UI.Combo object is in? I.e. what events are triggered/actions called when you select from an AW.UI.Combo object?
It does trigger onCurrentItemChanged, but how could I get the grid cell coordinates inside this?

Could I get onCellValueChanged to be triggered:

grid_obj.onCellValueChanged = function(value, column, row) {
alert("Cell " + column + "." + row + " changed to " + value);
}

Thanks for your help.