Steps to reproduce
In the overworld, create a portal some distance above the ground.
Save & quit, then reload the world.
Break the nether portal
About 10 seconds later, force close the game or do something to crash the game (e.g. Alt-F4)
Reload Minecraft and open the world.
Verify that the portal you broke in step (3) is broken.
Create a nether portal on the ground, under the frame of the other portal, and go through it.
In the nether, fly straight up from the generated portal until your Y-coordinate is higher than the portal you made in step (1), and make a portal there.
Go through that portal.
Expected result
You appear in the overworld in the portal that you made on the ground.
Actual result
You appear in the overworld in the portal frame up in the sky (or at its position, if you broke the entire frame). The attached world
[media]contains a ghost portal that was made following the steps above.
I had a Nether portal linking right next to a Blaze farm. After setting everything up (this farm in particular used a lot of pressure plates and Pistons to move the Blazes around) it worked well for a while. A separate player enter this nether portal, and the entier chunk containing the nether portal and Blaze spawner was gone from [-80, 64, 15] to [-65, ??, 0] (unsure how high up was deleted, but the nether roof is still there). Just a cube of air blocks, with a netherrack floor on y64 and the bottom half of my blaze farm sans blaze spawner/the top half. Five minutes earlier the farm and portal were still there as I had recently passed by that area.
Now I know this chuck deletion bug is a known issue which isn't why I'm entering this report. For whatever reason the nether side portal is still "active" despite not actually being there. When I enter the nether from the overworld, I spawn a few blocks in the air at the old portals coordinates and fall down. I can't enter this ghost portal from the nether side though, it's just an exit point into the nether. While trying to build a netherhub nearer to the ceiling I attempted to relink the overwold portal to a new one on the nether side, but no matter what I do I enter in the same spot as the ghost portal in the Nether. A couple solutions I have tried:
1)Place down a new nether side portal closer to the ghost portal and matching the overworld side coordinates (divided by 8). I can exit the nether using these just fine, but they never work for entering the nether. The ghost portal has priority for linking it seems.
2)Remove and place down a new portal on the overworld side. Result: only portals sufficiently far enough away from my base works. Anything around about 70 blocks seem to want to link up to the ghost portal, regardless of additional normal portals built in the nether.
3)Place down solid block covering the entier area where the Ghost portal is, and place down a new nether side portal nearby. Result: I enter into the ghost portal location, which is now solid blocks, and begin to suffocate.
4)Place down a nether portal in the exact location as the ghost portal. Enter and exit. Then break both the portals down + build a new nether portal nearby. Result: I still end up in the same coordinates as the ghost portal.
Linked issues
is duplicated by 1
relates to 1
Attachments
Comments 6
Thank you for your report!
However, this issue has been temporarily resolved as Awaiting Response
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I've experienced this issue as well.
Steps to Reproduce:
1. Create a nether portal and go through it.
2. Delete the overworld chunk containing the nether portal.
3. Go through the portal from the nether side again.
Observed Results:
The player is teleported to the previous location as if the portal is still there, but a portal is not created.
Expected Results:
The player is teleported to the same location with a portal, or a different location and the portal location is not cached. (May be caused by the region files not containing nether portal linking data, although I'm not sure why it would need to be elsewhere).
Relates to MCPE-84937
The issue is the portal data is stored separately from the chunk data so you have to delete the portal data in order to remove the ghost portal
Interesting issue. Is this still reproducible in the latest version? If so, can you add it to the affected versions?
The reproduction steps given above by in the comment by Hyrum require using a 3rd-party editor to "delete the overworld chunk," so that is not a valid way to reproduce ghost portals being created during normal gameplay. Ghost portals resulting from the use of 3rd-party tools are covered by MCPE-84937. What is reported here is ghost portals occurring during normal gameplay.
The original description relates a ghost portal being created as a secondary consequence of MCPE-98789. Another report, which I have resolved as a duplicate of this one, describes a ghost portal occurring in conjunction with lag on a server. It should be possible to reproduce that, but it would be hard to intentionally reproduce at-will. Essentially, you have to get the game to fail to update or save portal data when it updates/saves the chunk(s) from which the portal tiles and obsidian were removed.
Placing and removing a portal in the exact same location usually works, but only in the exact same location.