as i said, they are linked. the tracking is just the icing on the shit sundae that is CB. it in itself might not be exploitable, but it makes something that already IS even stronger by removing the "counter" we thought we had. since CB has been in discussion and we have had a member of the balance team brushing it off as simply a micro saver (which it is very much more than) i feel its extra important to emphasis that CB, especially in light of the tracking bug, is MUCH more than that.
the elefant bit was relating how, even much more expensive units with much less range shouldnt be knocking out units with no counter play, even with double the shots required. its important as its establishing precedent.
and its not a rare bug
your criteria are that you have to stand still and be in range, those are more than easy to fulfill, especially since due to game mechanics you as an allied player are not able to see the area that a LeFH covers. just one in the past (pre this bug) assumed we were moving out of range of the ability in the first place. retreating to your base is not an acceptable solution, and in some maps its not solution at all.
the relation is that and the CB is that there is precedent established to say minimal counterplay is bad. being able to nuke expensive units when in range and requiring multiple hits was bad, but near infinite range and the potential to OHK is debatable...
we cant divorce CB and the bug because that implies that one is ok with the other and that is not so. CB is broke, and the bug is just extra.