I have something else to add on top of it.
How about also making "follow target" get disabled during battle the same way waymarks work like there's no need to have that in a battle.

What would my reason be to suggest that?
Well.. imagine this; What if instead of the scenario where in the middle of a fight the AFKer relays to the party that it has to go afk to do something such as answering the door and it comes back with chances of needing a res to continue on?

We get the scenario of a silent unaware auto-attacking PKer whom assigned follow on an innocent party member just to end up stacking both their AoE's on each other. Or what if the AFKer ended up getting dragged to Llymlaen's DoT bath water if the one being followed stopped moving closer to the boss?