This might be removed eventually; because it's April 1st.
Texture changed, and its still flat... WHYYYYYYY
tryashtar HOW DOES THIS DUPLICATE THAT??? ITS ABOUT PARTICLES NOT SPRINTING!!!
redstonehelper I had some a video but it was too big
Possibly intentional, but IDK.
Do you have night vision on low brightness? It happens with glowstone too. It even happens in 1.12.2! But if you don't have night vision with low brightness settings, it is a bug.