I went into the nether briefly for the first time on the xbox one version, left, and found that the world was no longer rendering until I ran onto the un-rendered pieces of land. I have tried sleeping, dying, starting a new game, starting a new game in creative mode, and restarting my xbox. Every world I go into, I can't see further than about 20 blocks. The chunks I get to render when I run onto them stay rendered, until I sleep, exit, or try re-entering from the nether. Right now it is basically un-playable as I can't see where I am going until I get there. Please help.
*update* I went to the dashboard and quit the game that way, everything is loading again.