When entering a nether portal, you are unable to load the following screen and suffocate to what I am assuming is inside of a wall.. Then, unable to locate and retrieve your lost items due to dying inside a unloaded screen and being unsure where you died in the first place.
Related issues
duplicates
Comments

Thank you for your report!
We're actually already tracking this issue at MCPE-54519, so we will resolve and link this ticket 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.
⚠️ Please do not report issues as private, unless it is a security issue, exploit or requires private information.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki