We're not aware of such issue in the RadTileView so could you please tell us if you're using custom styles/itemTemplates or you've placed the tileView in a control that could handle the touch (IsManipulationEnabled=True) ? We'll appreciate it if you could send us a sample project demonstrating the problem.
As to the GridView problem you are facing, we fixed an issue like that a while ago, could you try it out with our latest sources? Unfortunately, there isn't a workaround that you can implement.
Regarding the Webcam button, no we don't offer such a control since it is very specific for very custom scenarios. You can search for the Windows api on how to manipulate a peripheral devices like a webcam and execute the desired logic on button click.
Hope this makes sense!
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