Ok… I'm pretty sure the nether is out to get me. I built a nether portal at (213, 14, 295), and I hopped through. After exploring the nether for a while, I returned to my portal and hopped back through, expecting to see my house. To my surprise, I appeared at a separate nether portal at (75, 50, 325). I have no idea where this second nether portal came from. I destroyed the portal, and walked back to the one I made in utter confusion. Just to double check, I hopped back through my portal. Once in the nether, I jump back through the portal. Lo, and behold! I appear at a new portal nearby the one that was at (75, 50, 325), still in sight of the place the first mysterious portal was! What the heck is happening here?
Minecraft – Why is the Nether Portal appearing at different places
minecraft-java-edition
Best Answer
This is most likely a rounding bug where the spawned portal in the nether, when trying to find a portal back in the over world, does the search but due to rounding and the 8 to 1 conversion rate, it will not find your original portal.
If you want a fix to this its the portal in the nether you want to destroy so that you can have it randomly generate a new one and give it a go. The problem is this means you have to hop to the nether, destroy the portal, store your gear and then die. When you go back into the nether your portal is going to be a bit of a ways away so make sure that wherever you store your gear it is -very- obvious to find it again.. Make sure you write down your coordinates and the like.
If hopping back into the portal to the over-world did not bring you to your original portal, it never will.
Please note that this rounding is potentially how to fast travel via nether hopping (hop into one portal and back out again to move 'forward' in the over-world).
Hope this helped.