Monsters are only born in the dark in open places.
In places like trap they are not born.
I play Xbox one the version that unified the platforms.
No monsters are born in the trap.
Related issues
Comments


Thank you for your report!
However, this issue is a Duplicate of MCPE-21856.
If you have additional information, please add it to that report.
Please search before reporting, as it's likely that one exists already.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki
⚠️ Issues that concern Minecraft (Xbox One Bedrock version) should be posted on the Minecraft (Bedrock codebase) tracker. I moved your ticket to the correct section.