Board Thread:Bug Report/@comment-24102713-20140901082340

You can see it by yourself by doing that (I saw that on multiplayer only, not sure if it's bugged on singleplayer as well):

-place some minecart tracks and ask friends if they see them normally and on the minimap (they won't normally, but on minimap - yes) (tracks are usable for you, but it's glitching for the others) (you and friends are still able to grapple tracks)

-disconnect and connect back

-tracks are invisble and not usable for you as well 