I was playing on my realm (I am the owner) and I tried to exit the nether through a portal that I had created, and the game got stuck on "building terrain". I closed the app and relaunched it, but I still cannot load into my realm (still hangs up on building terrain).

I can access my offline worlds without an issue, and other players can still load into my realm without a problem. 

Steps I have taken:

1. Signing out and then back in to my Xbox profile
2. Using a different Xbox (xbox one s)

EDIT 2/7/19 @1220 EDT:

I logged in earlier today and the issue had resolved itself. I was able to connect and play in my realm normally, however the issue popped up again while I was performing the same action: I tried to exit the nether using a new portal that I had created so that an overworld nether portal would be generated. When I passed through the nether portal to go to the overworld, the game again got stuck on "building terrain". I suspect that there is a bug related to overworld nether portal generation. I am once again unable to join my realm after experiencing this issue a second time. It seems like a server restart is the only thing that resolves the issue.