Sprinting seems to disable after a certain amount of time.

I am making a mini game in Minecraft that requires a player to sprint long distances without disengaging sprint.

What I expected to happen was the sprint would carry on foreverand not disengaging.

However, what actually happened was after going a while, my sprint stopped.

How to trigger the bug:
1. Double tap the forward key (default "W") on flat terrain so there are no bumps.
2. After about a minute, your sprint will disengage.