Instant PvP:
No delay between hits anymore, just like 1.8!
You can still use the offhand, shields, crossbows, etc… and any other mechanic after 1.8
Blocking with a sword (1.8 mechanic) does not work.
Multiplayer Compatible!
Axes have been nerfed back to their original 1.8 damage (with the exception of netherite axe obviously):