Wolves still beg for bones after being tamed

The bug

Wild wolves smell the bone but don't tilt their heads,while tamed wolves don't want bones and tilt their heads anyway.

Code analysis

The following is based on a decompiled version of MC 1.12.2 using MCP 9.40.
This issue is caused in the method net.minecraft.entity.ai.EntityAIBeg.hasTemptationItemInHand() because in one of the if-statements it checks if the wolf is tamed, if the wolf is not tamed, the wolf won't beg.

private boolean hasTemptationItemInHand(EntityPlayer player)
    {
        for (...)
        {
            ItemStack itemstack = player.getHeldItem(enumhand);
            //Here it checks if the wolf is tamed, to fix change to '!this.wolf.isTamed()'
            if (this.wolf.isTamed() && itemstack.getItem() == Items.BONE)
            {
                return true;
            }

            if (..)
            {
                ..
            }
        }
        return false;
    }

To fix this, the isTamed boolean will need to be negated in the if-statement.