values for pinch input produce very different results for same area on android device

Values for pinch input produce very different results for the same area on an android device. values can range from 0 to 1, or end up in the thousands, despite the pinch distance being the same. It is unknown if this behavior is intentional. This issue does not appear to be a regression.

Versions tested: issue occurs on all versions tested
4.16.3 - CL: 3561208
4.17.2 - CL: 3658906
4.18P4 - CL: 3685441

1. Open project provided
2. Launch to an android device
3. pinch your fingers on the screen from the center and pull both fingers further apart until fingers reach the corners of the screen
4. repeat this at least 3 times
   Result: the numbers returned on the print string are of widely different values
   Expected result: the print string returns numbers of a similar range