I'm playing on a friend's realm server. We had a previous nether portal set up, I wanted to make one a little closer to where we are living right now. I made a new portal and entered it to go to the nether, it dropped me off at the original nether portal created when I went into the nether the first time (expected). I wanted to go back through to see which nether portal in the overworld it was now connected to, the original or the new one.

Once I did this, however, the game was stuck indefinitely on the "building terrain" chunk of the loading screen. I exited after a while and re-entered the server, and it still hung on the same point of the loading screen. I booted the game up on my Switch and entered the realm from there on the same account, it still hung on the same point. I'm trapped until I can get a hold of my friend and see if anything can be done on the server end.

I've seen similar issues to this on older versions after searching the bug tracker, but they are all dated.