Minecraft version & Mod Version:

12.2 & RootsClassic-1.12.2-1.1.5

Single player or Server:

SINGLE

Describe problem:

Some recipes not showing in runic tablet ... such as Bark Knife or The Mortar

Yeah, this is by design. Those are vanilla recipes made in the crafting table, not special runic recipes like Bane of the Undead for example. JEI shows these just fine