I'm just updated to Ore Stone Variants-5.2-1.12.jar and noticed turtles (robot blocks from CC:Tweaked, a fork of ComputerCraft) doesn't get any ore block added on their inventories when the said block is broken by them.

That's definitely a game-breaking bug, since turtles can be used for batch mining and any ore "replaced" by OSV didnt get picked up. 4.6 worked fine for me and galacticraft ore blocks (yes, like #72 leave implicit, GC blocks still generate at their own and dont get "managed" by OSV) are picked up fine by turtles.

Minecraft 1.12.2, Forge 2854