I’ve noticed that sometimes while playing Minecraft on Xbox One and the render distance will get capped at 18 chunks. It should be able to go up to 22 chucks but it won’t allow this. The same issue occurs on my new Xbox One X which only allows me to set the render distance to 22 considering all the extra power it has!
Thank you for your report!
However, this issue has been closed as a Duplicate of MCPE-24148.
Although this issue is slightly different, the issue with render distances being incorrectly capped should be resolved when MCPE-24148 is fixed, so we'll track this issue there for now.
Your additional information and observations are very useful, so if you can add them to the comments section of the parent issue it would be appreciated.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Feedback – 📖 Game Wiki