As the title says, doing this will not give you the advancement.
How to recreate
Place a hanging sign and a normal sign
Use a glow ink sac on the hanging sign then the normal sign.
MC-256711
Using a glow ink sac on a hanging sign will not give the advancement "Glow and Behold!"
Resolved
Duplicate
0
Thank you for your report!
We're tracking this issue in MC-256510, 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
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki