skyLightPassable and lightPassable don't do anything

[Saithe6]

Minecraft Ver: 1.20.1
Fabric Ver: 0.16.9
Mod Ver: 1.4.4

light and skylight pass through the anchors regardless of this setting:

forge.forgeReality(
  {block = "minecraft:red_sand"},
  {
    lightPassable = false,
    skyLightPassable = false,
  },
)

this should set it to block all light, but it doesn't. Also, on a related note, rain passes through the anchors and idk if that's intentional.