There's a minor issue between this mod and Muluna's Cellulose Plastic recipe when the setting to restore Vanilla ingredient counts is enabled. I've already dropped a request with details here for Muluna's author to correct since I presume it's better to solve from that end, but the author doesn't seem to be responding to issue threads recently. Not sure if you want to (or even can) implement a fix from your end in the meantime.
Basically Muluna's Plastic-from-Cellulose recipe attempts to clone the default plastic recipe and swap out Coal/Crushed-Coal with an appropriate amount of Cellulose, but it fails to do so when the Crushed Coal ingredient count in the regular recipe is just 1 unit - it's expecting 2 or 3. So the Cellulose recipe ends up just being the same recipe as the default, making Muluna's plastic production much more challenging than intended.
