Thanks for letting us know. That's certainly a weird exception. We'll get that fixed in a future core rules release.
Alchemist Research filed - Chirurgeon still has the original writting:
As long as your proficiency rank in Medicine is trained or better, you can attempt a Crafting check instead of a Medicine check for any of Medicine's untrained and trained uses.
Whereas the core rulebook currently reads:
You can use your proficiency rank in Crafting for anything that requires a proficiency rank in Medicine (such as prerequisites), and use your Crafting modifier in place of your Medicine modifier for all Medicine checks.