Sprinting by double-pressing "Walk Forwards" (default "W" key) cannot be disabled

I rebind "sprint" to "r" in the options, which works really well when I'd like to sprint. However, double tapping forward (by default that is, pressing "w", "w" in short succession) still causes me to sprint.

This is a problem when navigating precarious terrain, whilst in combat, or while swimming, because you'll precariously start sprinting when you intended for more accurate movement control over your character. It would be nice to have an option to disable the double-w in favor of a different run button.