New Tab no Close Icon on Tablet

Using SmartClient v9.0p_2013-11-29

I have a tab set and dynamically create a new tab using addTab with the canClose attribute set. On PC my tabs show the cross icon to close the tab but on a tablet such as iPad running iOS7 using Chrome or Safari I get no close icon on the tab.

Am I missing something? Is this a bug?

Thanks

Steven