[Affecting Live Content] Hard Game Crashes in latest Beta. Possibly a TP issue.

Verification Builds: Bug experienced in 1.6.18 BETA 18, Publish and release builds

Summary: Upon reaching certain sections of the marketplace map "A Nightmare In Candyworld" the game has a hard crash and completely shuts down. Through some testing I found that it happens in at least 2 spots in the map. The first is near the start of Chapter 3 when the player is crossing the bridge. The only redstone that happens at the point of the crash is a teleport to make sure all the players are on the bridge and a summoning of Lightning and a evocation_illager nearby. The second instance I found of this bug is halfway through chapter 4 directly after confronting the villain and about to start his boss fight. At the time of the crash the player is being teleported to a nearby location. Upon reloading after either of these hard crashes results in the player being spawned in about 30 seconds back and all entities around the player disappearing. From what I observed these crashes seem very similar and the only similarity in terms of redstone is when the player is being teleported but this may or maynot be the cause of the crash. I can't tell.

Impact: A Nightmare in Candyland experiences hard crashes and the map is not completable

Repro Steps:
1. Load up "A Nightmare in Candyworld" from the store
2. Select your difficulty at the beginning of the map.
3. Use the following command to manually start Chapter 3 of the map. "/setblock 1 8 6 redstone_block"
4. After the intro cutscene, follow Sugarrush(the blue fairy) to the bridge.
5. The game will have a hard crash upon the player and sugarrush reaching the center of the bridge.

If you would like to observe the crash in chapter 4:
Repeat the above steps 1 and 2.

3: Use this command to manually start chapter 4: "/setblock 1 15 6 redstone_block"

4: Play through the first part of chapter 4 till you reach King Candy in the Mountain. Upon the completion of this sequence Lord Sugar Bones will say " Now watch your world Burn" On the word burn the player is supposed to be teleported up. but instead you will experience a hard crash similar to the one from chapter 3.

 

Observed Results: Hard Game Crash. Complete Shutdown of Minecraft. Reloading the world shows all entities disappeared and the player spawning in a different location than where they were before.

Expected Results: Game continues as normal, no crash. Players are all teleported to be at the center of the bridge and the banshee(evocation_illager) spawns at the end of the bridge and the map plays as normal.

Screenshots: None