Playing on an Xbox One X with the latest beta build and system software, I've experienced a few bugs. I've attempted mining a few different resources with fortune III on a diamond and iron pickaxe, and it seems to change the odds for Lapis Lazuli as expected but doesn't affect Coal or Diamond at all. I also haven't been able to smelt gold ore in a regular furnace or a blast furnace, regardless of fuel. I have also noticed that water and lava physics seem to misbehave in that removing the source block will start the surrounding flow blocks disappearing, but sometimes they will linger and you will have to begin the process again, sometimes as many times as there are blocks. With the lava physics changing in particular, I've had more than a few deaths happen mining because lava continued to flow and then linger after being plugged.