0:12 Start 0:17 Leaving Home 0:24 Into the Mine 0:33 You Shall Not Pass! 0:43 No Going Back Now 0:51 Nether Bound 0:58 Into the Fortress 1:10 Stronghold Who? 1:18 Dragons' Den
Bugrock edition always have these problems caused by bad registration of player's position. Like as you said the server detected the player jumped on the air and being judged for hacking