I was in the nether and decided to get home by building a new nether portal 2,000 blocks away from the originally generated one, I went through the new portal with my friend and we were 19,000 blocks from home base so I decided to back through this new portal which was in the overworld to only travel the 2,000 blocks in the nether. Then I was stuck on the building terrain screen for at least 5 minutes so I decided to close application. when I came back online I was stuck UNDER the nether with bedrock above me stood on nothing. I didn't know that it was under the nether at the time but by copying the world and going in creative on the new world I flew up through the bedrock and found out I was under nether, and I was also 19,000 blocks from the original nether spawn as I think the game thought I was in the overworld still with co ordinates 20,000 blocks away. while under there I could drop blocks which would just disappear, I couldn't place any blocks, I couldn't eat food, and I couldn't loose hunger in an attempt to die to return to spawn. I could swing all my tools and blocks and when I shot my bow the arrows weren't visible. my friend was not glitched tho he was in the nether when he loaded back online. this has ruined the world for me as I can't die down there and I am stuck under bedrock with no way out whatsoever. image 2 is the original nether portal, image 1 is the nether portal we built to get home and image 0 and video is where I am stuck.