I’ve been testing on IOS 8.3 as well as IOS 8.1.
Strangely enough in IOS 8.3 no event.xStart nor event.yStart values get recognised, basically they always indicate a value of 0.
This basically breaks all touch events that need to calculate the event.xStart /yStart location to the event.x,y location.
Anyone having the same problem on is 8.3? Everything works fine before ios8.3.