Problem with sneak button getting stuck

Issues with sneak button. Sometimes it gets stuck in position. I tried to swap the sneak and jump button but still doesn't work. Tried to increase the button size but same result.
Video on my drive- https://drive.google.com/file/d/1y_6BVIYGybT-Dpjj3h7jalbY1ijbEBip/view?usp=drivesdk