Guesses I have for a fix (im no coder its just a guess)

I suggest seperating the recipes by their grouping data in their json files, wouldnt that be something to consider when seperating items as such? (It works fine in vanilla, im wondering if that recipe grouping could be the method.)
Only thing with that is compiling the items into one entry into ui with interchanging items (similiar to vanilla recipe ui) and then displaying all the items with that same grouping tag upon clicking.

Just an idea I hope you consider, other than that you could be saying no, if so no need to comment.