Resolution: Works As Intended
Near bedrock, recently updated to 1.4.5 from 1.4.4 (no mods)
Enchanted fresh gold pickaxe in 1.4.4 with efficiency IV, unbreaking III, fortune III. Updated to 1.4.5, found diamond, going to mine it and receive lots of diamonds.
Pickaxe breaks diamond block very slowly, as if it is an incompatible tool and will not drop a diamond. I don't want to risk losing the diamond, so I'm not sure if it'll drop it or not.
Steps to Reproduce:
Enchant gold pickaxe at level 30 in 1.4.4, update to 1.4.5, use pickaxe to try to mine a diamond ore.