It seems the slab variant's of both end stone bricks and ender bricks are destroyed In survival mode by punching them with bare fists or with anything. Nothing seems to drop when destroyed and i tried all your other slab variante's

Using Botania 204 and Garden of glass
Forge version 10.13.4.1492

fml-client-1 log gist.github.com/infernopuppet/2eb5a23da5175f66ee0a