[POE2] Ranger minions dying due to distance

What's up with ranger minions dying when you get too far away from them? Like 1 or 1.5 screen.

If a ranger minion stops for a second to attack and you are still running, they die.

There is no way all 6 of them are killed by a single random mob with half hp.
If I stop running, they stop dying, so I reckon it's distance based.

Is this intended behavior?

yes
run bad