I started wondering why I didnt get any mobs from XP grinder and realized that there was a non-existant light source that if updated expands.
[media]
MC-145554
Light goes through areas that are fully covered from light
Resolved
Duplicate
0
Laura Langon
(Unassigned)
Unconfirmed
Minecraft 19w09a
Retrieved
Same problem as well. They seem intent on stopping players from creating these contraptions.