Hello Mojang Team,
I'm a Minecraft Bedrock player and recently I found a lighting incohesion with mushrooms (or non-filled blocs) like this screenshot. It's not important unlike some problematic bugs like crashes and more but I prefer report this 😉
Respectfully,
A random Minecraft player
This is working as intended as brown mushrooms emit at a light level of 1. See [here|https://minecraft.gamepedia.com/Light#Light-emitting_blocks] for more about light.