Welcome Timbo!
Your answer can be found by watching extended clips of the EVAs. Not the showy bits like the hammer & feather or the golf swing, but rather the long stretches when they're doing field geology or deploying experiments. What you will see is an extraordinary phenomenon that cannot be replicated on Earth.
The lunar dust (called regolith) is extremely fine-grained, like like talc, plaster or cement (and holds a footprint just as well, as you noticed). however, when you kick such fine powder on Earth, it always billows in our air. Larger particles (like sand) do not billow as much, and will be seen to go a short distance when kicked - but it has to be a substantial kick.
On the Moon, in 1/6th gravity, just the small foot motions of the astronauts as they scuff around doing their work is often enough to send the dust flying a meter or more. Also, without any air the dust does not billow at all. Time and again, in the EVA footage you can see loping astronauts sending great fans of fine regolith in every direction.
At every stop the Lunar Roving Vehicle (LRV) made, the first thing the astronauts would do is get out, walk around the front, dust-off the TV camera, manually point the high-gain antenna at Earth so we could get the TV signal, then hop around to the back of the LRV to unload their sampling tools (in 1/6th g you can't really walk in the conventional sense - the kinematics don't allow it - but you can hop, skip, lope, bounce and sashay). When they do this, they cannot help but kick dust all over the rover tracks. When they move away and start photographically documenting the area, you can see that the area around the LRV (including the tracks) is completely covered with kicked dust and footprints.
However, if you look at photos taken further away from the LRV, you can often find the distinctive chevron tire-tracks from where the LRV drove up. (I see that, while I have been writing this, others have posted examples).
Hope this helps.
