Wither boss heads does not look at the player or mob correctly when he is attacking

• Basically, Wither boss heads does not look at the player or the mob that is attacking. Also sometimes the wither shot the skulls in one random direction

What was expected to happen:

All 3 heads of wither boss looking at the target he is attacking

What happens:

All heads don't look at the target that is attacking

Device: Android LG k 10