Building Terrain Bug

Last night I can still join the realm, but in the morning when I tried to join the realm It just says "Joining Realm... Building Terrain" and my friend even screenshotted me being stuck on it, the server owner is doubting whether It was just a bad device or really a bug, so is this a bug or is it just my faulty iPad? Also how do I resolve this problem or bug? Also the picture is just me floating because I can't load in or some sort.