The wither fight is impossible (almost) with the difficulty "hard" because the effect from the whiter inflicts damage for 35seconds which you can reset with milk, but since the whiter then shoots you again it does not do anything to have continuous "healing" of the fight. the fight is also very difficult due to the fast flight speed and although the difficulty should be difficult it is much too difficult or even impossible for many people to beat the whither on hard.

How to reproduce:
just spawn a whiter on any device on dificulty hard

what I wish for:
better ways to heal
fewer bullets that spread the effect
(Part of why it is so difficult: healing through eating is different in de "pe, be" and console platforms etc. than in the java version (I like java version more))