Was playing with a friend on Xbox360 today (same console), hunting random achievements. We ended up making something like a 600 block long rail heading in a single direction. My friend rode it first and got the On a Rail achievement shortly after reaching the other end. I rode it and received nothing. I stayed in the world for about an hour afterwards and never received it, so it can't be a simple delayed reaction. I rode the track back and forth several times. Before you ask, the world is in survival and has never been in creative. I obtained a couple achievements before constructing the rail, and have received a couple more afterwards. I was the world host. My friend received the achievement almost immediately, so it isn't an issue with the rail construction or length.
Has anyone experienced this issue and/or managed to find a solution?
The Meaning of Life, the Universe, and Everything.
The Achievements system is quite buggy on the Xbox 360, unfortunately. There are several Minecraft achievements that I have been unable to unlock at all, including the "Passing the Time" one, which requires playing for 100 days. I'm not sure if that's meant to be 100 in-game days, or 100 realtime days, but I've done both and still haven't unlocked this achievement. I also have problems with the "Zombie Doctor", "Beaconator", "Taste of Your Own Medicine", and "Change of Sheets" Achievements. I have no idea about the multiplayer online Achievements, as I only ever play single player, without Xbox Gold.
Achievements have been buggy for years. Way back when I first started playing I qualified for three or four achievements and got none of them, then one day I was sniping skeletons and all of them unlocked when I got the sniper duel achievement, got like 80 added to my gamerscore and all the notifications went off at once. I didn't have an issue with the beaconator achievement, got it by accident, after they added it I opened the ui on an existing four tier beacon and I got the achievement. I also didn't have a problem with zombie doctor but it must have been two years ago or more when I got that one. Haven't crafted a colored bed yet so I dunno if change of sheets works for me.