I really don't know what this is but it happened when I was afk, after I got back I found the block textures all glitchy including the map on my offhand. After saving and quiting the world and coming back it was fixed.
Linked issues
duplicates 1
Attachments
Comments 1
migrated
Thank you for your report!
However, this issue has been closed as a Duplicate of MCPE-31377 due to the more general or descriptive summary.
Your votes, 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