When I make a circle of rails, mobs can't get out but they can get into!
In MC 1.5 mobs won't pass the rails but in this case it seems they are passing it.
Linked issues
Comments 2
Duplicate of MC-8233, please use the search function to see if your bug has already been submitted. Currently over 53% of tickets are being closed as duplicate.
Can confirm for 13w10b