Required prop types warnings

[psixdev]

When I zoom with gestures on the touchscreen, I get errors in the console (I use chrome devtools with my phone as remote device):

Warning: Failed prop type: The prop `startX` is marked as required in `be`, but its value is `null`.
Warning: Failed prop type: The prop `startY` is marked as required in `be`, but its value is `null`.
Warning: Failed prop type: The prop `endX` is marked as required in `be`, but its value is `null`.
Warning: Failed prop type: The prop `endY` is marked as required in `be`, but its value is `null`.

This problem is repeated in the example: https://jsfiddle.net/chrvadala/f67qyfsd/

[chrvadala]

Fixed with v3.1