So when did the tracking list get expanded?

[DMN]

I know for all of the classic period I played, I don't recall this expanded tracking list we have both on green and blue. You saw something like 15 mobs or so and that was it no scrolling/filter no nothing. I keep seeing these rangers running around tracking places they would have had zero chances to track in due to trash mobs and the newer spawning mobs going to the bottom of the tracking list. Very unclassic. Any plans/potential to fix this?