On the ps4 version of Minecraft bedrock since the vr update has gone live I've had two extended session have a glitch in which the autosave icon doesn't leave the screen. Once I try and save and quit it gets stuck in the saving screen. After waiting like 10 minutes I decide too close the Minecraft application and when I reload my world nothing saved in my last play session. This has happened twice to me while playing in vr. I'm not sure if the vr mode is a factor but it only happened whilst in vr.
Related issues
Comments

Thank you for your report!
We're tracking this issue in MCPE-12347, 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:
📓 Issue Guidelines – 💬 Community Support – 📧 Mojang Support – ✍️ Feedback and Suggestions – 📖 Game Wiki