I found this bug by accident, I've been able to successfully reproduce it multiple times without fail.
Teleportation Bug in Survival (Realms)
Start a Single Player world in Creative with the same seed as the Realm.
Back out into the main menu and go to Realms.
Start connecting to the Realm, but before you get into the server back out into the main menu and quickly hop into your Single Player creative world.
Once you load in, you should see the sky flashing between night and day, this means it worked.
You can now fly freely around the world in Creative. Land somewhere and log out.
Go back into the Realm, you should now have "teleported" to the spot you landed at in Creative.
Comments 2
Thank you for your report!
Minecraft Realms for Java Edition has received a lot of updates and fixes over the last two years, so this issue has probably already been fixed in the meantime (e.g. because it was a temporary outage or an issue with the base game).
Since this bug report has not been updated since at least two years, please let us know if this is still an issue in current versions of Minecraft and update the bug report if applicable. If this is no longer an issue, please let us know as well. Thanks!
This issue is being temporarily resolved as Awaiting Response. Once the requested information has been delivered, the report will be reopened automatically.
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Duplicate of the bug about limbo state (I don't remember which one)