the scrap crushing recipe appears to not work when the recycling technology is removed (in my case, by the mod "Only Nauvis").

actually, this appears to just be " a lot of recipes stop working when their tech is removed" since it appears to be happening to a significantly larger amount of recipes (yumako light oil, spoilage crude oil, jelly solid fuel, ammonia/sulfur nutrients, ice/solid fuel ammonia, and acid dissolution)

I looked into it and found that I cannot provide a solution to this. If a mod decides to remove certain technologies, any recipes that tech unlocks will be un-unlockable. I can, however, give you a command that you can use to unlock recipes you feel should be unlocked.

/c game.player.force.recipes["vgal-<RECIPENAMEHERE>"].enabled = true

Replace "<RECIPENAMEHERE>" (including the <>) with the name of the recipe (found in the mod files), and it should work.

Sorry for the silly fix, if I find (and include) a better solution, I'll put it here. Thanks for the bug report nevertheless! (´∀`)b

thank you!!