So i tried to reset the stepheight of the player during the LivingEquipmentChangeEvent. However it seems like one side, either the client or the server doesn't seem to notice the change. Here is my Code:

@SubscribeEvent
    public void armorUnEquip(LivingEquipmentChangeEvent event) {
        EquipmentSlotType slot = event.getSlot();
        if (slot == EquipmentSlotType.FEET) {
            ItemStack stackFrom = event.getFrom();
            ItemStack stackTo = event.getTo();
            if (stackTo == ItemStack.EMPTY) {
                if (stackFrom.getItem() instanceof IUnEquip) {
                    ((IUnEquip) stackFrom.getItem()).onUnEquip(event.getEntityLiving(), stackFrom);
                }
            }
        }
    }

and in the armor item:

@Override
    public void onArmorTick(ItemStack stack, World world, PlayerEntity player) {
        player.stepHeight = 1.25f;
    }

    @Override
    public void onUnEquip(LivingEntity entity, ItemStack stack) {
        if (entity instanceof PlayerEntity && stack.getItem() == this) {
            entity.stepHeight = 1.0f;
        }
    }

 

So i added a synchronization package. However it has to be noticed, that on the serverside the default stepheight is 1.0 but on the clientside it is 0.6. Is there a reason for this difference?