Bug: Foot step sounds get stuck re-playing rapidly

[pushfoo]

Description

The foot step sound gets stuck playing. Sometimes this keeps playing after movement keys are released, but it may also stop when the movement controls are released.

How to replicate

1. Install and run the game per REAMDE.md
2. Mix brief taps of the direction arrow keys until repeats of the foot step sound begin to play rapidly one after another

[pushfoo]

This issue still appears to happen on arcade 2.6.17.