Black textures on Deferred Technical Preview
Steps to reproduce:
Launch the game (Minecraft Beta 1.20.40.20)
Create a new world
Enable "Render Dragon Features for Creators"
Apply one of any resource packs that contains PBR
Enter the world
Enter Settings while you are in the world
Select "Deferred Technical Preview" in the Video tab
Exit Settings and click "Resume Game"
You will see black textures in the world
Device used: A22 5G (Mali-G57 MC2, Mediatek Dimensity 700)
Affected: 1.21.30.21 Preview/Beta
Linked issues
Attachments
Comments 2

Thank you for your report!
We're tracking this issue in MCPE-175170, 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:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support (Technical Issues) – 📧 Microsoft Support (Account Issues)
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki