There are two ways to go about this:

First method (setHit):

1. Place an empty Panther in the editor named "bob" without quotes.
2. Get in the vehicle as the driver.
3. Press escape and open the menu, and enter "bob setHit ["pas_L", 1]" in the debug executor, followed by pressing local exec.
4. Attempt to drive the vehicle, and note that it is still moving despite having a completely destroyed track.
5. You can repeat this on the other track with pas_P. It will not make any difference and the vehicle will still operate.

Second method (explosives):

1. Place an empty Panther named "bob" and an explosive specialist (as player) in the editor.
2. Place an explosive charge close to the Panther in game, and detonate it at a safe distance.
3. Get in as the driver of the Panther. If you've taken engine damage, use "bob setHit ["motor", 0]" to repair the engine to full health.
4. Note that, as before, the vehicle is still functional and drivable despite the tracks being completely destroyed.

This issue affects BOTH of the tracked vehicles, I only used the Panther for reference.

This issue has been present since the vehicles were introduced, and is not new.