I know it must be me but when I load the demo JSON data I do not have a expander icon. I can hover where it should be and it works fine but I just don’t see it. I have a reference to the jqx.base.css in the same folder as my themes that work and I am using the layout widget and putting the tree in a panel. I am loading the tree from selecting an item on the menu. Any help is appreciated. I know that I am missing something. using 4.5.1