I closed out the game after dying but before respawning and when I tried to open the world again it freezes on the "building terrain" generation status making it impossible to play on the world. Making a copy of the world does not fix it.
Related issues
duplicates
Attachments
Comments

Thank you for your report!
We're tracking this issue in MCPE-159285, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki