It seems that the any plank recipe for oak trapdoor overwrites the birch trapdoor recipe (or is taken priority before the birch one). Making it only possible to make oak trapdoor using all vanilla tree type.

When you go to the recipe in JEI which mod is the trapdoor recipe from?

When you go to the recipe in JEI which mod is the trapdoor recipe from?

JEI shows future-mc result but either using the "+" button or manually placing into crafting grid result in default Minecraft trapdoor

On further testing it seems the bug is only present when using non vanilla crafting table (like crafting station form tinkers)

Seems to only be a problem when using tinkers station ATM, refined storage crafting grid works fine