I created a lvl 1 Druid. When selecting starting equipment I'm allowed: "(a) a scimitar or (b) any simple melee weapon". I selected "Light Hammer." When I finished and went back to my character sheet it had +2 on attack. When I expanded it, I was getting the +2 from Proficiency. Problem is, Druids are Proficient in " Weapons: Clubs, daggers, darts, javelins, maces, quarterstaffs, scimitars, sickles, slings, spears." Or in other words, Druids are proficient in every simple weapon except the greatclub,
handaxe, light crossbow, light hammer, shortbow, and unarmed strike. So it's bugged by starting me out with +2 for light hammer, when that's not a weapon I can be Proficient with.