Is rune crafting an exception to the normal crafting rules?

[something random]

By my understanding of the Crafting rules on page 236 & 237 of player core a formula is not required to craft an item. (Unless the item is uncommon or rarer and you do not otherwise have access to it).

However my reading of the "The Etching Process" section on page 225 of GM core indicates that a Formula is necessary to craft a rune.

Is rune crafting an exception to the general crafting rule that a formula is not required to craft an item?

[Finoan]

Technically it would be an override as currently worded.

However, I think it is much more likely that this is a spot in the rules that was missed when the requirement for having crafting formulas was changed.

pre-Remaster, the CRB required crafting formulas in order to create runes or any other item. Player Core changed that so that formulas are only needed for rarity locked items or if you want to speed up the crafting process.

[something random]

I think you are right hopefully it is covered in a future errata.