Steps to reproduce:
1) Open the attached project.
2) Deploy to an iOS device and run.
3) Start drawing on the screen.

Red 'x' signs appear on the drawn lines - they mean stationary touch events were recorded.
This is a regression of case #717707 (see for more detailed info).

Note: sometimes opening the Notification Center (swiping from the top of the screen), or Control Center (swiping from the bottom) makes the issue dissapear for a short while.

Reproduced on:
5.5.0a5, 5.4.0f3

Did not reproduce:
5.3.6p1, 5.3.4f1, 5.3.0b5

Devices:
iPad Mini 2, iOS 10.0 beta 3 - reproduced
iPhone SE, iOS 10.0 beta 3 - reproduced
iPad Air, iOS 8.1.1 - reproduced.
iPhone 6+, iOS 8.0 - did not reproduce