It's the way it passes an argument into an argument into a check into a check, where some can use the memory location of the individual, and other require "names" - which translates to keywords on mobs.

So then when you do the command and multiple mobs share names, it gets all kinds of weird due to how pull has to work since it takes multiple argument (name and direction) which it segments out, while it tries to also let you just enter one argument and not obligate two.

Which is funky.

I'll spend some more time on it when I have time and maybe work it from the ground up in a way that prevents this situation AND doesn't create new problems. I already spent an hour just on this this morning, and I'll put some more time in it later to see if I can work it out.