I discovered that sculk sensors right below the surface of the water will light themselves incorrectly while activated and while the darkness effect is pulsing. This is in RC-1 for 1.19, and smooth lighting is at maximum.
This also happens at nighttime and while the the player is underwater. Included are some images of the bug. This does not happen anywhere under the water's surface or above water, just barely above the surface.
Thank you for your report!
We're tracking this issue in MC-207257, 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