Same issue to the Java Edition. If you hold nether sprouts, they are invisible due to how small they are.
MCPE-66080
Nether sprouts are invisible when held
Resolved
Duplicate
0
Thank you for your report!
We're actually already tracking this issue at MCPE-65800, so I resolved and linked this ticket 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:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki