Minecraft, the realm, and all iOS devices tested are up to date. Affects WiFi and cellular. I am using texture pack ChromaHills (up to date) which was purchased from the Minecraft Store. This issue does not affect Minecraft for Windows 10, Switch, or Xbox. I can confirm this issue has been around for a month or so and has not been fixed. The iOS devices tested are the iPhone XS Max and iPad 6th generation.
Thank you for your report!
We're tracking this issue as REALMS-2468, 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.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – ✍️ Feedback and Suggestions – 📖 Game Wiki – 📖 FAQs