Column label disappears on tap from iPad (feature or bug?)

Hi,

I have a sap.ui.table.Table and when I tap the column label using a touch screen device (iPad in my case), the text disappears from the column. If you tap anywhere else outside the table, the text comes back.

Is this a bug? If it's not, is there any way to stop it? I don't want anything to happen when I tap the column header.

You can see my code in this example:

http://jsbin.com/gusazexiwi/2/edit?html,output

Thanks