Minecraft Version

v1.18.1

Forge Version

v39.1.2

Mod Version

v1.8.1.4

Details

The glass slab & stair is missing a loot table and doesn't drop when mined with silk touch.

Some blocks are also missing the new block tags minecraft:mineable/pickaxe, etc.

Some of my mods have not yet updated to 1.18.2, but I have checked the prefab file for 1.18.2 and it is also missing the loot table files for glass blocks.

1.18.1 is no longer supported, please update to 1.18.2 and check again.