When visible
attribute is set to false for a panelbar-item, the item remains visible when the widget is rendered.
<kendo-panelbar name="project">
<items>
<panelbar-item text="Storage" expanded="true">
<items>
<panelbar-item visible="false" text="Kids Storage" ></panelbar-item>
</items>
</panelbar-item>
</items>
</kendo-panelbar>
Adding visible attribute to panelbar-item does not change its visibility.
Adding visible attribute to panelbar-item should change item visibility.