On LAN worlds it is not possible to toggle PvP unlike on servers where you are able to do that.
This is a bug since you are not able to use the feature to toggle PvP!
How to fix:
Add a PvP command to toggle PvP.
Here is also a short video about the bug including a fix for it: http://youtu.be/QSXehgYujdw
- duplicates
-
MC-5547 PvP on LAN
- Resolved