Prior to 1.10 I was able to respawn the End Dragon. I recently mined one of the obsidian pillars to gain resources naturally thinking this was the cause of not being able to respawn the dragon I replaced the obsidian but to no avail still no dragon. I tested this on a single player world and was able to respawn the dragon no problem. Not sure why but realms world doesn't want to respawn it. I tried restarting the game numerous times and still no use.
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Can confirm.
My world generated the end in 1.9.4 on realms. Initially killed the dragon in 1.9.4 then went to respawn the dragon in 1.10 and it would not work. downloaded a backup to local and tried and it still would not respawn, after reading this bug went into creative locally and lowered bedrock on the edge of exit portal and tried repawning. This worked but upon killing the dragon a new end city gateway did not appear which was the reason for doing this in the first place as I found 4 end cities all without ships and wanted to try a different area.
I confirm this issue. My world was also generated in 1.9 on Realms. We killed the dragon in 1.9. When we wanted to respawn it for the first time, Realms got updated to 1.10 and we found out that the End refused to spawn the dragon.
Can confirm that situation 4 as pointed out by Anomie X is definitely still a bug and impacted my survival world. Resolved with some creative mode changes to the end portal as suggested. Would still recommend reopening the bug since this is likely to be fairly common.
Someone please create a new ticket for whichever part of this ticket is still happening in 1.10.2 and refer to this ticket in the description.
Done, MC-104736.
The problem still exists for me. I have the situation 3 as described in Anomie X's comment 22/Jun/16.
My world however was created in a very early version of Minecraft, years ago. It was updated to version 1.8 and stayed there until I found that in my profile it was set to use that version. Now I have updated to 1.11.2 and because the new additions to the End I wanted to go back and can, but alas cannot respawn the Dragon.
Any advice would be appreciated.
@@unknown: Please refer to MC-104736, as apparently any further discussion of this issue is supposed to happen there. (Although I believe the title of MC-104736 is not correct, as someone updating from 1.8 to e.g. 1.11.2 will experience an issue, but the world never got corrupted by MC-103497...)
You should find a workaround for situation 3 there.
migrated
I noticed in 1.10 I can't respawn the dragon in my world.
Looking into things a bit more, I find that my level.dat on the server has an empty <DragonFight>. If I go to the end and then /save-all, a <DragonFight> gets created. If I leave the end and restart the server, the <DragonFight> is emptied again.
Most critically, when I attempt to respawn the dragon, the <DragonFight> gets an <ExitPortalLocation> created, but the <y> is 1 lower than the <ExitPortalLocation> I see if I re-create the world with the same seed on the client.
I can reproduce the bug in single player as well:
Create a world
Go to the End, /kill the dragon, leave the End
Exit the world.
At this point, you might want to check level.dat to see the Y value for <ExitPortalLocation>.
Load the world then exit it again.
At this point, if you look in level.dat you'll see <DragonFlight> is empty.
Load the world, go to the End, and see that respawning the dragon fails.
If you trigger a save and check level.dat at this point, you can observe the Y value for <ExitPortalLocation> is one lower than what it was in step 3.
So it looks to me like there are two bugs here:
<DragonFight> isn't being saved back to level.dat if no one goes to the End during the session.
When the <ExitPortalLocation> is being re-determined by scanning the world for a portal thanks to #1, there's an off-by-one error.
Bug #2 makes the game think the crystals are not in the correct position for respawning the dragon. If you break the bedrock and place the crystals one block lower, it will respawn the dragon and will also move the whole portal down one block. Presumably someone could repeat the bug to drill the portal down through the island; I don't know what would happen once it gets past the bottom of the world.