Thx, that last comment helped me fix the bug
It should be blackstone, and has been fixed in bedrock.
Yes, it is changed. We are tweaking the attributes of piglins & hoglins fairly regulary now. That in itself is not a bug, so I'm closing this.
We can't reproduce this in a way that differs from 1.13.2. Can you attach a save that illustrates how cows drop steak in 1.13.2 vs raw meat in 1.14?
We'll update Java to match