setControlVisible(false) doesn't hide the control

I even call refresh(). What am I doing wrong?

This is a bug in AW code. You can hide the controls with

obj.setStyle("visibility", "hidden");

That works! How do you restore visibility?

obj.getStyle("visibility") is undefined initially which is awkward.

This is not really a response... more a continuation of this thread.
I don't seem to get
obj.setStyle("visibility", "visible");
to show!!!

(One would think this is impossible to get wrong....!)

obj.setStyle("visibility", "visible");
obj.refresh();

worked for me.