Minecraft Forums

My son was playing around with the new heights (the expanded ceiling), and built his first nether portal significantly above the clouds (in creative mode)

This created a matching nether portal near the ceiling in the Nether (expected). However, when traveling back through this spawned portal from the Nether side, the system did not go back to the original portal in the main world, but instead spawned a whole new portal on the ground.

It didn't matter how many times we broke the spawned portal, the system would continuously spawn new portals in and around the same area.

The coordinate mapping to have portals link together and be functional at all levels needs to be checked from both sides. There seemed to be nothing that we could do to be able to go from the Nether back through the original active portal, but it became an interesting way to 'create' obsidian in single player mode.

(Go through top/'very high' active portal in Main world to the Nether, go back through from the Nether to the Main world, break newly spawned portal at ground level and collect obsidian, return to the top 'still active' portal and repeat).