Current Duration Position reporting as higher than max value

[Jsnt1004]

_AssertionError ('package:flutter/src/material/slider.dart': Failed assertion: line 163 pos 15: 'value >= min && value <= max': Value 7577.0 is not between minimum 0.0 and maximum 7466.0)

It appears that the callback to getDurationPosition is reporting a higher value than getDurationMax causing the error when playing the video when playing an MP4 on Windows.

I have a workaround by resetting the current position to the max duration when it is greater than max.

It would be more elegant if this was in the core package.