Some Mindcrackers exploited some worldborder glitches https://www.youtube.com/watch?v=3LFt7Ee5hv4
The bugs include:
TNT can be fired out of the world, boats can be placed out of the world, you can enderpearl out of it and water can flow out of it.
Linked issues
Comments 3
TNT can be fired out of the world, boats can be placed out of the world, you can enderpearl out of it and water can flow out of it. 🙂
Please describe the issue rather than making us watch a 20+ min video.