"Follow" is a suggestion not a rule.

[Full Frontal Yeti]

And yeah i find that to be a bug.

If i say to a single toon, move here.
there is very little in the game engine that will allow this toon to not fulfill the movement order it was given.
However when a unit is told to "follow" another unit. That winds up being a suggestion the toon is seemingly pretty free to decide to not do.

It was not a bodyguard order, where one might imagine the bodyguards will stop and fight aggressive units while the guarded runs on ahead.
It was a follow command, so exactly what part of, follow that unit, means feel free to not follow that unit and stop to have fights with arbitrary whatever?

Follow should mean, just follow, just like block only means block, not and sometimes take an attack if you feel like it.

Please correct the follow order to not allow a unit to decide it has better things to do than just keep following.