Efficiency Tools such as Diamond Shovels and Axes destroy very slowly its targets even with Efficiency V (Sand, Gravel, Dirt, etc.) Also there are many lightning bugs. And block placing bugs

I enchanted a diamond shovel (Efficiency V) and I was shocked by how slowly they broke blocks. Bug or update? Same with the Diamond Axe. Test it yourselves! Also lightning bugs appeared. And finally when placing blocks they get like transparent and some seconds after, they place. Thanks!
Armytechrex.