When you place a sign with the sign in 9th slot in your hotbar, it will put you into the 8th slot after you place the sign
MCPE-65514
9th Inventory Slot bug
Resolved
Duplicate
0
Thank you for your report!
We're actually already tracking this issue at MCPE-49117, 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