The Bug:
Glow item frames are rendered dark when a light source is nearby.
Steps to Reproduce:
Go into a dark area.
Place an item frame and glow item frame next to each other.
Place a light source nearby.
→ ❌ Notice how the glow item frame is rendered dark.
I confirm, the render of glowing item frame is too dark inside of 10x10 blocks or going to place glowing item frame inside somewhere where you build
This also affects brightness low level or medium level. except high level