When mining with a pickaxe with efficiency 5, power 5, unbreaking 3, sharpness 5 and a haste beacon, some of the blocks mined become invisible and don't drop in item form. The game doesn't seem to have enough time to update the blocks fast enough. This might just be a technical glitch as sometimes when I reload or re-log the world, the bugged out blocks reappears; but not all the time.