Version v6.08.00 RC6
Sources loaded: Pathfinder RPG Core Supplements, Inner Sea World Guide
Rogue 1, Brawler 2, Halfling, before racial mods Stats STR 15, DEX 12, CON 8, INT 13, WIS 14, CHA 12.
The Pathfinder feat Staggering Fist is requiring "Base Attack at least 14" but according to the ACG the feat requires a BAB +2.
Confirmed on both 6.08x and 6.09 tracks. Confirmed with d20pfsrd that it should be +2. Fix PR will be made shortly.