I logged on yesterday after having not played for about two weeks and I noticed something odd. Every single spot where I had a rail now has a block of bedrock. I'm not sure how many total this is because I had a lot of rails, but it's probably in the hundreds. Even if I place a new rail down it instantly turns to bedrock. I already put in for a bug report, but I thought I would share it on here just incase if anyone else was having a similar issue.