Got this from a post on Reddit and found the same bug in my gameplay. There's a recipe listed for both Nails and Screws in the Advanced Workbench (a default recipe, not learned from schematics). I put the proper tools and materials in the workbench and tried to craft both Nails and Screws but they both remain grayed-out and unable to craft. Didn't test other workbenches.
#Advanced Workbench - Nails / Screws Not Craftable
hollow stump
odd vigil
I also have this issue, but wasn't aware that I needed a schematic.
past elk
Fixed
fathom steeple
Bug is still in the game (at least for me)
Nails do not queue (did not learn any receipe).
past elk
It says at the bottom you need a schematic
fathom steeple
I'm dumb. Sorry....
Just curious: What was the reason to treat these two schematics different from others and do not hide them until you learned them? (e.g. like the ||sword||)