HTML5 Canvas Mobile Scrolling and Native Events with Konva
By default Konva will prevent default behaviour off all pointer interactions with a stage. That will prevent unexpected scrolling of a page when you are trying to drag&drop a shape on a mobile device.
But in some cases you may want to keep default behaviour of browser events. In that case you may set preventDefault property of a shape to false.
Instructions: if you are on mobile device try to scroll a page by each rectangle. Green - should prevent default behaviour (no page scrolling). Red - will keep default behaviour (scrolling should work).