I'm running as a paladin. Am I the only one whose mobs just disappear right in front of me when I kill them? No corpses. I'm hitting them with a zeal.

Probably it is happening because you have some cold dmg and that is the reason why mobs are "disappear" - get rid of cold dmg if you can

The cold shatter animation has been replaced with monsters getting pushed into the void or some shit

Blizzard doing blizzard things

Thanks guys, I suspected so, but decided to double-check.