[Pathfinder] Power Attack temp bonuses don't all get saved to file

Add two light weapons to a character with Power Attack. Equip one weapon as primary and one as off-hand. In the temp bonuses tab, add Power Attack (Light) for both weapons, and add Power Attack (Off-Hand) for both weapons. Observer the character sheet statblock preview to see that there are Power Attack weapons listed for both weapons for both hands. Save the character and close it. Reopen the character and go to the temp bonuses tab. One of the 4 Power Attack temp bonuses is missing.