Nether portals teleport me at the same coordinates in the nether as I was in the overworld. When travelling back through a new portal, the game teleports me at the equivalent coordinates in the overworld.
For example:
Location in overworld x: -3000, y: 70, z: 100
Location in nether I get teleported to: x: -3000, y: 70, z: 100
Location in overworld when travelling back: x: -24000, y: 70, z: 800
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Thank you for your report!
We're tracking this issue in MCPE-115933, so this ticket is being resolved and linked as a duplicate.
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