I haven’t logged in today so I can’t test anything yet. But have you checked if you already have the recipe? Is it a new recipe or can you use the old recipe which has the updated set bonus? Also, as a related question, do you need to craft new Captain Crimson pieces or is the set bonus retroactive (like most sets are)?
Edit: disregard my comment as I did not read the fine print in the patch notes regarding the crafted sets. Apparently, either the Captain Crunch plans are very rare or there is some unintended bug regarding their drop rate (maybe only a certain act’s cache can drop it).