Ive noticed that things like the electromagnetic plant from fulgora cannot be uncrafted, even though there's nothing really special about it. Is there a reason for this or was it an oversight?

Hm, that shouldn't be the case; Reverse Factory dynamically goes through the entire recipe list in the game and attempts to create a reverse recipe out of it, only failing if the item/recipe name don't match, recipe creates multiple products, or certain other edge cases that shouldn't be recycled (neither of which should be the case for this). Sounds like a bug, looking into this

Just checked and so far I've found the following: fusion generator and reactor, biochamber, cryogenic plant, lightning collector and the aforementioned electromagnetic plant.

AHH, I understand now. My reverse recipe function was actually working too well, since it was also copying the surface conditions from the base recipe (meaning an item with surface conditions could only be recycled on the planets it could be crafted in the first place). Definitely an oversight; just had to strip off that property. Should be fixed in v9.0.11

That's hilarious lol XD. Glad to hear it's fixed.

Edit: Tried the new update and I must say, my full chest of extra electromagnetic plants will be forever thankful 🥹