I was attempting to make a (non-oscillating) track platform that moves when the player touches it, and reverses to its starting position when the player is no longer touching it, similar to how certain elevator platforms work. Apparently, however, that's not a feature of the current track platforms (that I'm aware of).

Perhaps there could be an "Auto-drop first cube" box on track platform items similar to the one that was added to elevator platforms a while back. If oscillating, the platform would move on player touch, and stop completely if the player is no longer touching it. If non oscillating, the platform reverses to its starting position when the player is no longer touching it.