While Touching persists as long as the user is dragging
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 While Touching’s effect persists until the user stops touching anywhere, regardless of the object boundary. Project http://bit.ly/2Kyc0ZP (Check empty object below top left health bar.) 
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 I thought the behavior is supposed to be like this... But I can understand, I want a behavior where it detects if your persisting touch goes off the object's boundaries, it will be perfect for UI buttons.