Pathfinder - Serpent's Skull - "boarded in the Shackles" does not ask for Saving Throw Type when you add the Trait.
The Trait is supposed to add +1 to one type of saving throw.
Windows 7-64, Java 6, Pathfinder + APG + Serpent's Skull Player's Guide
I see, this does work, but not as a user is expecting. You get a choice in another location. I'll place the chooser in the trait. (Not a bug technically, just not as easily noticed).
Due to a bug in CHOOSE:NUMCHOICES=x| I'm going to leave this as is for now.
You should be seeing the Selection 'Shackles Save Bonus' in your Left to do Summary and the same place you selected the trait.
Not a Bug.